CA2450774C - Slider - Google Patents
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- Publication number
- CA2450774C CA2450774C CA002450774A CA2450774A CA2450774C CA 2450774 C CA2450774 C CA 2450774C CA 002450774 A CA002450774 A CA 002450774A CA 2450774 A CA2450774 A CA 2450774A CA 2450774 C CA2450774 C CA 2450774C
- Authority
- CA
- Canada
- Prior art keywords
- film
- polyethylene foaming
- foaming
- polyethylene
- skin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005187 foaming Methods 0.000 claims abstract description 158
- 239000004698 Polyethylene Substances 0.000 claims abstract description 135
- 229920000573 polyethylene Polymers 0.000 claims abstract description 135
- -1 polyethylene Polymers 0.000 claims abstract description 134
- 239000002985 plastic film Substances 0.000 claims abstract description 57
- 229920006255 plastic film Polymers 0.000 claims abstract description 57
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 244000025254 Cannabis sativa Species 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
A slider resists corrosion of moisture, dirt and ultraviolet of sunlight and prevents patterns therein from wear and tear; furthermore, the slider also provides a smooth touching feeling to users. The slider mainly contains a polyethylene foaming board, an upper polyethylene foaming skin, a first plastic film, a lower polyethylene foaming skin and a second plastic film. The polyethylene foaming board has a top surface, a bottom surface and edge surfaces. The upper polyethylene foaming skin contains an inner surface and an outer surface. The inner surface of the upper polyethylene foaming skin is bonded with the top surface and the edge surfaces of the polyethylene foaming board. The first plastic film is bonded with the outer surface of the upper polyethylene foaming skin. The lower polyethylene foaming skin contains an inner surface and an outer surface. The inner surface of the lower polyethylene foaming skin is bonded with the bottom surface of the polyethylene foaming board. The second plastic film is bonded with the outer surface of the lower polyethylene foaming skin. The upper and the lower polyethylene foaming skins have foaming rates less than a foaming rate of the polyethylene foaming board.
Description
TECHNICAL FIELD
This invention relates geneavally to a slider, in particular, to provide a slider having at least one protective layer protecting the foaming material of the slider from corn~sion of moisture, dirt and ultraviolet of sunlight and patterns on the slider from wear and tear. The slider can be used as a bodyboard, a snowboard, a snow sled, a grass sliding board, sand sliding board or the like.
BACKGROUND OF~ THE INVENTION
A traditional slider used as a snowboard contains a board and two handles installed at two sides. The slider has patterns thereon. The traditional board is made of hardened plastic because hardened plastic is wear resistant. Although hardened plastic has a nature of wear resisting, users don't feel comfortable when physically contact with the board. The traditional slider is heavy, so it's not convenient for users especially children to carry it. Besides., patterns printed on the board or patterns on a sticker stamped on the board are easily worn out since they directly contact human body, air and sunlight.
Another traditional slider is made of expended polyethylene. The main structure of the
This invention relates geneavally to a slider, in particular, to provide a slider having at least one protective layer protecting the foaming material of the slider from corn~sion of moisture, dirt and ultraviolet of sunlight and patterns on the slider from wear and tear. The slider can be used as a bodyboard, a snowboard, a snow sled, a grass sliding board, sand sliding board or the like.
BACKGROUND OF~ THE INVENTION
A traditional slider used as a snowboard contains a board and two handles installed at two sides. The slider has patterns thereon. The traditional board is made of hardened plastic because hardened plastic is wear resistant. Although hardened plastic has a nature of wear resisting, users don't feel comfortable when physically contact with the board. The traditional slider is heavy, so it's not convenient for users especially children to carry it. Besides., patterns printed on the board or patterns on a sticker stamped on the board are easily worn out since they directly contact human body, air and sunlight.
Another traditional slider is made of expended polyethylene. The main structure of the
2 0 slider is a board. There are many "air-cells" in the board and the air-cells decide the weight feature of the board. For some bodyboards, axa out layer is bonded on top of the board and several out strips are bonded around the surroundings of the board. The out layer and out strips are made of expended polyethylene at a foaming rate less than the foaming rate of the board. Therefore, the air-cells in the: out layer are smaller than 2 5 the air-cells in the board. A slider made of expended polyethylene is more comfortable compared to hardened plastic. however, the ovdt layer and the out strips could be broken under the sunshine for a period of time, because it is known that the ultraviolet will result the damage of the expended polyethylene. The air-cells on the surfaces of the out layer an<i the out strips are fragile when frictionized.
~nce the air-s cells in or on the out layer are broken, water will retained in the dents formed by the broken air-cells and therefore reduce the life and workability of the board.
Furthermore, patterns on the slider can only be printed on the out layer and the out strips. Therefore, the patterns will fade under the sunshine quickly.
The wear and tear of a slider is significant if used frequently. When doing snow l0 sliding, surfing, or grass sliding, users would like to have comfortable touch feelings with the slider. Patterns or Iaictures on sliders are easy for the owners to identify their own sliders. Users of'sliderE> also don't like the patterns to be worn out quickly.
Therefore a slider that can provide users comfortable touch and can reduce the wear and tear of the board is needed.
SUMMARY ~F INVENTIs~N
It is therefore primary objective of the present: invention to provide a slider that can resist corrosion of moisture; dirt and ultraviolet of sunlight at all sides.
2 0 Another obj ect of the invention is to provide a slider that can prevent the patterns on the slider from wear and tear.
Further object of the invention is to provide a slider with smooth touching feeling surfaces.
The present invention, briefly summarized, in one embodiment discloses a slider 2 5 mainly containing: a :polyethylene foaming board, a upper polyethylene foaming skin,
~nce the air-s cells in or on the out layer are broken, water will retained in the dents formed by the broken air-cells and therefore reduce the life and workability of the board.
Furthermore, patterns on the slider can only be printed on the out layer and the out strips. Therefore, the patterns will fade under the sunshine quickly.
The wear and tear of a slider is significant if used frequently. When doing snow l0 sliding, surfing, or grass sliding, users would like to have comfortable touch feelings with the slider. Patterns or Iaictures on sliders are easy for the owners to identify their own sliders. Users of'sliderE> also don't like the patterns to be worn out quickly.
Therefore a slider that can provide users comfortable touch and can reduce the wear and tear of the board is needed.
SUMMARY ~F INVENTIs~N
It is therefore primary objective of the present: invention to provide a slider that can resist corrosion of moisture; dirt and ultraviolet of sunlight at all sides.
2 0 Another obj ect of the invention is to provide a slider that can prevent the patterns on the slider from wear and tear.
Further object of the invention is to provide a slider with smooth touching feeling surfaces.
The present invention, briefly summarized, in one embodiment discloses a slider 2 5 mainly containing: a :polyethylene foaming board, a upper polyethylene foaming skin,
- 3 a first plastic film, a lower polyethylene foaming skin and a second plastic film. The polyethylene foaming board having a top surface, a bottom surface and edge surfaces.
The upper polyethylene foaming skin contains an inner surface bonded with the top surface and the edge surfaces of the polyethylene foaming board and an outer surface.
The first plastic film is bonded with the outer surface of the upper polyethylene foaming skin. The lower polyethylene foaming skin contains an inner surface bonded with the bottom surface of the polyethylene foaming board and an outer surface. The upper and the lower polyethylene foaming skins have a foaming rate less than the foaming rate of the polyethylene foaming board. The second plastic film is bonded with the outer surface of the; lower polyethylene foaming skin. The first plastic film contains an outer film and an inner elm. The outer film contains an inner surface having patterns thereon and the patterns are visible from an. outer surface of the outer film. The inner film contains an outer surface and an inner surface. The outer surface of the inner film is bonded with the inner surface of the outer ~Im. The inner surface of the inner film is bonded with the polyethylene foaming board.
BRIEF DESCRIPTION OF DRAWINC'TS
The invention will be more clearly understood after refer to the following detailed 2 0 description read in conjunction with the drawings wherein:
Fig. l is a perspective view of a polyethylene foaming board of an embodiment;
Fig 2 is a perspective view of the first embodiment;
Fig. 2A is an enlarged cross sectional view of the first embodiment;
Fig.3 is a perspective view of the second embodiment;
The upper polyethylene foaming skin contains an inner surface bonded with the top surface and the edge surfaces of the polyethylene foaming board and an outer surface.
The first plastic film is bonded with the outer surface of the upper polyethylene foaming skin. The lower polyethylene foaming skin contains an inner surface bonded with the bottom surface of the polyethylene foaming board and an outer surface. The upper and the lower polyethylene foaming skins have a foaming rate less than the foaming rate of the polyethylene foaming board. The second plastic film is bonded with the outer surface of the; lower polyethylene foaming skin. The first plastic film contains an outer film and an inner elm. The outer film contains an inner surface having patterns thereon and the patterns are visible from an. outer surface of the outer film. The inner film contains an outer surface and an inner surface. The outer surface of the inner film is bonded with the inner surface of the outer ~Im. The inner surface of the inner film is bonded with the polyethylene foaming board.
BRIEF DESCRIPTION OF DRAWINC'TS
The invention will be more clearly understood after refer to the following detailed 2 0 description read in conjunction with the drawings wherein:
Fig. l is a perspective view of a polyethylene foaming board of an embodiment;
Fig 2 is a perspective view of the first embodiment;
Fig. 2A is an enlarged cross sectional view of the first embodiment;
Fig.3 is a perspective view of the second embodiment;
- 4 -Fig.4 is a perspective view of the third embodiment containing two polyethylene foaming skins;
Fig.S is a perspective view of the fourth emberdiment;
Fig.6 is a perspective view of the fifth embodiment;
Fig.7 is a perspective view of the sixth embodiment having two patterns; and Fig. is a perspective view of the seventh embodiment.
DETAILED DESCRIPTI0~1 OF PREFERRED EMBODIMENTS
Fig.l illustrates a polyethylene foaming board 1 of the following embodiments.
The polyethylene foaming board 1 is made of a foamable material. The polyethylene foaming board 1 has a foaming value from 1.2 PCF to 2.4 P(~F, wherein PCF is foaming value meaning a weight per cube foot. The higher foaming rate, the lower foaming value. The polyethylene foaming board 1 contains plural cells 2. Each of the cells 2 has a diameter from 1 to 3mm.
Fig.2 illustrates the first emlbodiment of the present invention. The embodiment contains a polyethylene foaming board 10 and a plastic film 11 encapsulating and bonding with the polyethylene foaming board 10. The plastic film =~ 1 has plural small concaves 111 on both sides. The polyethylene foaming board 10 is united with the 2 0 concaves 111 at the inner side of the plastic film 11. Thereby the bonding surface between the plastic film I 1 and the polyethylene foaming board 10 is increased.
Accordingly the bonding strength is greatly increased. The plastic ~lrn 11 prevents the ultraviolet rays of the sunshine from directly projecting on 'the polyethylene foaming board 10 and moisture from directly contacting the polyethylene foaming board 10.
2 5 The concaves 111 at 'the outer side of the plastic Blm 11 can provide stronger traction
Fig.S is a perspective view of the fourth emberdiment;
Fig.6 is a perspective view of the fifth embodiment;
Fig.7 is a perspective view of the sixth embodiment having two patterns; and Fig. is a perspective view of the seventh embodiment.
DETAILED DESCRIPTI0~1 OF PREFERRED EMBODIMENTS
Fig.l illustrates a polyethylene foaming board 1 of the following embodiments.
The polyethylene foaming board 1 is made of a foamable material. The polyethylene foaming board 1 has a foaming value from 1.2 PCF to 2.4 P(~F, wherein PCF is foaming value meaning a weight per cube foot. The higher foaming rate, the lower foaming value. The polyethylene foaming board 1 contains plural cells 2. Each of the cells 2 has a diameter from 1 to 3mm.
Fig.2 illustrates the first emlbodiment of the present invention. The embodiment contains a polyethylene foaming board 10 and a plastic film 11 encapsulating and bonding with the polyethylene foaming board 10. The plastic film =~ 1 has plural small concaves 111 on both sides. The polyethylene foaming board 10 is united with the 2 0 concaves 111 at the inner side of the plastic film 11. Thereby the bonding surface between the plastic film I 1 and the polyethylene foaming board 10 is increased.
Accordingly the bonding strength is greatly increased. The plastic ~lrn 11 prevents the ultraviolet rays of the sunshine from directly projecting on 'the polyethylene foaming board 10 and moisture from directly contacting the polyethylene foaming board 10.
2 5 The concaves 111 at 'the outer side of the plastic Blm 11 can provide stronger traction
- 5 -between human body and the outer side of the plastic film, so users of the slider can hold on the slider firmly.
With reference to Fig.3, the second embodiment of the present invention contains a polyethylene foaming board 20, an outer film 21 and an inner film 22. The outer film 21 contains an inner surfacE. 211 having patterns 212 thereon and the patterns 212 are visible from an outer surface 213 of the outer film 21. The inner film 22 contains an outer surface 221 and an inner surface 222. The outer surface 221 of the first inner film 22 is bonded with the inner surface 211 of the outer faOn 21 including the patterns 212. The inner surface 222 of the inner film 22 is bonded with the polyethylene foaming board 20. The outer film 21 together with the inner film have plural concaves 210 on the outer surface 213 of the outer film 21 and on the inner surface 222 of l:he inner film 22. The polyethylene foaming board 20 is united with the concaves 210 at the inner surface 222 of the inner film 22. Thereby the patterns 212 are protected by the outer film 21 from wear and tear. The cells of the polyethylene foaming board 20 axe double protected by the outer film 21 and the inner film 22.
Because the outer film 21 directly contact sunlight and airs and for proving enough strength in order patterns can be printed on, the thickness of the outer film 21 is preferably thicker than the thickness of the inner elm 22. The thinner inner film 22 is 2 0 more suitable for being heat: laminated to the polyethylene foaming board 20 than the thicker film. The inner film 22 is extnrde coated or pasted on the inner surface 211 of the outer film 21. The thickness of the outer film 21 is preferably from 0.02mm to O.lSmm and the thickness of the inner film 22 is preferably from O.Olmm to O.lSmm.
With reference to Fig. 4, the third embodiment of the present invention contains a 2 5 polyethylene foaming board. 35, a first plastic film 33, and a second plastic film 34.
With reference to Fig.3, the second embodiment of the present invention contains a polyethylene foaming board 20, an outer film 21 and an inner film 22. The outer film 21 contains an inner surfacE. 211 having patterns 212 thereon and the patterns 212 are visible from an outer surface 213 of the outer film 21. The inner film 22 contains an outer surface 221 and an inner surface 222. The outer surface 221 of the first inner film 22 is bonded with the inner surface 211 of the outer faOn 21 including the patterns 212. The inner surface 222 of the inner film 22 is bonded with the polyethylene foaming board 20. The outer film 21 together with the inner film have plural concaves 210 on the outer surface 213 of the outer film 21 and on the inner surface 222 of l:he inner film 22. The polyethylene foaming board 20 is united with the concaves 210 at the inner surface 222 of the inner film 22. Thereby the patterns 212 are protected by the outer film 21 from wear and tear. The cells of the polyethylene foaming board 20 axe double protected by the outer film 21 and the inner film 22.
Because the outer film 21 directly contact sunlight and airs and for proving enough strength in order patterns can be printed on, the thickness of the outer film 21 is preferably thicker than the thickness of the inner elm 22. The thinner inner film 22 is 2 0 more suitable for being heat: laminated to the polyethylene foaming board 20 than the thicker film. The inner film 22 is extnrde coated or pasted on the inner surface 211 of the outer film 21. The thickness of the outer film 21 is preferably from 0.02mm to O.lSmm and the thickness of the inner film 22 is preferably from O.Olmm to O.lSmm.
With reference to Fig. 4, the third embodiment of the present invention contains a 2 5 polyethylene foaming board. 35, a first plastic film 33, and a second plastic film 34.
- 6 The polyethylene foaming board 35 comprises a polyethylene foaming core 30, an upper polyethylene foaming skin 31 a lower polyethylene foaming skin 32. The polyethylene foaming core 30 has a top surface 301, a bottom surface 303 and edge surfaces 302. The upper poi.yethylene foaming skin 31 contains an inner surface 312 bonded with the top surface: 301 and the edge surfaces 302 of the polyethylene foaming core 30, and an outer surface 311. The upper poly ethylene foaming skin 31 has a foaming rate less than a foaming rate of the polyethylene foaming core 30. The first plastic film 33 is bond~;d with the outer surface 311 of the upper polyethylene foaming skin 31. The lower polyethylene foaming skin 32 contains an inner surface 321 bonded with the bottom surface 303 of the polyethylene foaming core 30, and an outer surface 322. The lower polyethylene f~~uning skin 32 has a foaming rate less than the foaming rate of the polyethylene foaming core 30. The second plastic film 34 is bonded with the outer surface 322 of the Lower polyethylene foaming skin 32. The first plastic film 33 has plural concaves 331 on both surfaces. The concaves 33I of an inner surface of the first plastic film 33 is united with the upper polyethylene foaming skin 31 for providing more bonding surface. The thickness of the second plastic film 34 is greater than the thickness of the first plastic film 33. The thickness of the first plastic film 33 is preferably from 0.02mm to 0.15mm and t:he thickness of the second plastic film 34 is preferably from 0.3mm to l.5mm. When i:he slider is used as a 2 0 snowboard or the like, the bottom surface need stronger resistance against friction, so the second plastic film 34 h<~ve a thickness more than 1.5m:rr~.
With reference to F'ig. 5, the: fourth embodiment of the present invention contains all the elements and same stnzcture of the third embodiment. The fourth embodiment contains a polyethylene foaming board 46, a first plastic film 4, and a second plastic 2 5 film 45. The polyethylene foaming board 46 comprises a polyethylene foaming core 40, an upper polyethylene foaming skin 43 a lower polyethylene fa~aming skin 44. The first plastic film 4 contains an outer film 41 and an inner film 42. The outer film 41 contains an inner surface 411 having patterns 412 thereon and the patterns 412 are visible from an outer sunace 41 ~ of the outer film 41. The inner film 42 contains an outer surface 421 and an inner surface 422. The outer surface 421 of the inner film 42 is bonded with the inner surface 411 of the outer film 41. The inner surface 422 of the inner film 42 is bonded with the upper polyethylene foaming skin 43. The outer film 4I together with the inner film 42 have plural concaves 410 on the outer surface 413 of the outer film 41 and on .he inner surface 422 of the inner film 4~2. The upper polyethylene foaming skin 43 is united with the concaves 410 at the inner surface 422 of the inner film 42. The thickness of the outer film 41 is preferably greater than the thickness of the inner film 42. The thickness of the outer film 41 is preferably from 0.02mm to 0. l5mm and the thickness of the inner film 42 is ;preferably from O.Olmm to 0.1 Smm.
The polyethylene foaming skins described in the embodiments of Fig.4 and Fig.S
have foaming rates lower than the foaming rates of the polyethylene foaming boards (the polyethylene foaming skins have higher foaming value than the foaming value of the polyethylene foaming boards). The foaming value of the polyethylene foaming skins has the foaming value from 2.5 PCF to S PCF. The diameters of the cells in the 2 0 polyethylene foaming skins is less or equal to 0.5 mm. Since the polyethylene foaming skins have lower foaming rate, the polyethylene foaming skins have smaother surfaces than the surfaces of the polyethylene foaming boards.
Because the plastic films are comparably thin, human bodies can feel the smoothness of the polyethylene foaming skins. In addition, the polyethylene foaming skins and the _ g polyethylene foaming boards are of similar materials, so they can be easily bonded together.
With reference to Fig. 6, the; fifth embodiment of the preseait invention contains all the elements and same structure; of the third embodiment. The :fifth embodiment contains a polyethylene foaming board 56, a first plastic film 53 and a second plastic film 57.
The polyethylene foaming lsoard 56 comprises a polyethylene foarraing core 50, an upper polyethylene foaming skin 51 a lower polyethylene foaming skin 52. The second plastic film 5'7 contains an outer film 54 and an inner elm 55. The outer film 54 contains an inner surface 541 having patterns 542 thereon and the patterns 542 are 1 o visible from an outer surface 543 of the outer film 54. The sinner film 55 contains an outer surface 552 and an inner surface 551. The outer surface 552 of the second inner film 55 is bonded with the paner surface 541 of the outer film 54. The inner surface 551 of the inner film 55 is bonded with the lower polyethylene foaming skin 52. The thickness of the second plastic film 57 is preferably from 0.3mm to l.5mm.
Fig. 7 illustrates the sixth embodiment of the invention. The sixth embodiment combines the characters of the fourth and fifth embodiments. The sixth embodiment contains a polyethylene foaaning board 67, a first plastic film 68 and a second plastic film 69. The polyethylene foaming board 67 comprises a polyethylene foaming core 60, an upper polyethylene foaming skin 64 a lower polyethylene foaming skin 63. The 2 0 first plastic film 68 contains a first outer film 66 having first patterns 661 thereon and a first inner film 65. The secsond plastic film 69 contains a second outer film 61 having second patterns 612 thereon and a second inner film 62. Therefore t;he both patterns can be properly protected.
With reference to Fig. 8, the seventh embodiment mainly contains a first plastic film 2 5 71, a polyethylene foaming skin 70 and a second plastic film 72. The polyethylene foaming skin 70 contains an upper surface and a lower surface. The first plastic film 71 having an inner surface bonded with the upper surface of the polyethylene foaming skin 70.The first plastic film 71 contains a first outer film 711 and a first inner film 712. The first outer film 71:i contains an inner surface having first patterns thereon and the first patterns 7111 are visible from an outer surface of the first outer film 711. The first outer film 7I 1 has a thickness from 0.02mm to 0. lSmm.The f°rrst inner film 712 contains an outer surface and an inner surface, the outer surface of the first inner film 712 is bonded with the inner surface of the first outer film 711, the inner surface of the first inner film 712 is bonded with the sapper surface of the polyethylene foaming skin '70. The first inner film 7 i2 has a thickness from O.Olmm to 0. l5mm. The polyethylene foaming skin 70 has a foaming value from 1.9 PCF
to 6 PCF. The second plastic film 72 having an imaer surface bonded. with the lower surface of the polyethylene foaming skin 70. The second plastic film contains a second outer film 722 and a second inner film. 721. The second outer film 722 contains an inner surface having second patterns 7221 thereon and the second patterns 7221 are visible from an outer surface of the second outer film 722. The second inner f"11m 721 contains an outer surface and an inner surface. The outer surface of the second inner film 72 a is bonded with the inner surface of the second outer fi1m722.
The inner surface of the second inner film 721 is bonded with the lower surface of the 2 o polyethylene foaming skin 'lO.The second plastic film 72 has a thickness from 0.3mm to l.5mm. The first outer film 711 together with the first inner film 712 have plural c~ncaves 7112 on the outer surface of the first outer film 7:L 1 and on the inner surface of the first inner film 712. The upper surface of the polyethylene foaming skin 70 is united with the concaves 7112 at the inner surface of the fiavst inner film 712.
The present invention is not restricted to be used in slider. I~ can also be used as a surfing board. Numerous characteristics and advantages of the invention have been set forth in the foregoing descr~.ption, together with details of the structure and function of the invention, and the novel features thereof are pointed out in appended claims. The disclosure, however, is illustrated only, and changes may be made in detail, especially, in matters of shape, size and arrangement of parts, materials and the combination thereof within the principle of the invention, to the full extend indicated by the broad general meaning of the terms in which the appended claims are expressed.
_ ~1
With reference to F'ig. 5, the: fourth embodiment of the present invention contains all the elements and same stnzcture of the third embodiment. The fourth embodiment contains a polyethylene foaming board 46, a first plastic film 4, and a second plastic 2 5 film 45. The polyethylene foaming board 46 comprises a polyethylene foaming core 40, an upper polyethylene foaming skin 43 a lower polyethylene fa~aming skin 44. The first plastic film 4 contains an outer film 41 and an inner film 42. The outer film 41 contains an inner surface 411 having patterns 412 thereon and the patterns 412 are visible from an outer sunace 41 ~ of the outer film 41. The inner film 42 contains an outer surface 421 and an inner surface 422. The outer surface 421 of the inner film 42 is bonded with the inner surface 411 of the outer film 41. The inner surface 422 of the inner film 42 is bonded with the upper polyethylene foaming skin 43. The outer film 4I together with the inner film 42 have plural concaves 410 on the outer surface 413 of the outer film 41 and on .he inner surface 422 of the inner film 4~2. The upper polyethylene foaming skin 43 is united with the concaves 410 at the inner surface 422 of the inner film 42. The thickness of the outer film 41 is preferably greater than the thickness of the inner film 42. The thickness of the outer film 41 is preferably from 0.02mm to 0. l5mm and the thickness of the inner film 42 is ;preferably from O.Olmm to 0.1 Smm.
The polyethylene foaming skins described in the embodiments of Fig.4 and Fig.S
have foaming rates lower than the foaming rates of the polyethylene foaming boards (the polyethylene foaming skins have higher foaming value than the foaming value of the polyethylene foaming boards). The foaming value of the polyethylene foaming skins has the foaming value from 2.5 PCF to S PCF. The diameters of the cells in the 2 0 polyethylene foaming skins is less or equal to 0.5 mm. Since the polyethylene foaming skins have lower foaming rate, the polyethylene foaming skins have smaother surfaces than the surfaces of the polyethylene foaming boards.
Because the plastic films are comparably thin, human bodies can feel the smoothness of the polyethylene foaming skins. In addition, the polyethylene foaming skins and the _ g polyethylene foaming boards are of similar materials, so they can be easily bonded together.
With reference to Fig. 6, the; fifth embodiment of the preseait invention contains all the elements and same structure; of the third embodiment. The :fifth embodiment contains a polyethylene foaming board 56, a first plastic film 53 and a second plastic film 57.
The polyethylene foaming lsoard 56 comprises a polyethylene foarraing core 50, an upper polyethylene foaming skin 51 a lower polyethylene foaming skin 52. The second plastic film 5'7 contains an outer film 54 and an inner elm 55. The outer film 54 contains an inner surface 541 having patterns 542 thereon and the patterns 542 are 1 o visible from an outer surface 543 of the outer film 54. The sinner film 55 contains an outer surface 552 and an inner surface 551. The outer surface 552 of the second inner film 55 is bonded with the paner surface 541 of the outer film 54. The inner surface 551 of the inner film 55 is bonded with the lower polyethylene foaming skin 52. The thickness of the second plastic film 57 is preferably from 0.3mm to l.5mm.
Fig. 7 illustrates the sixth embodiment of the invention. The sixth embodiment combines the characters of the fourth and fifth embodiments. The sixth embodiment contains a polyethylene foaaning board 67, a first plastic film 68 and a second plastic film 69. The polyethylene foaming board 67 comprises a polyethylene foaming core 60, an upper polyethylene foaming skin 64 a lower polyethylene foaming skin 63. The 2 0 first plastic film 68 contains a first outer film 66 having first patterns 661 thereon and a first inner film 65. The secsond plastic film 69 contains a second outer film 61 having second patterns 612 thereon and a second inner film 62. Therefore t;he both patterns can be properly protected.
With reference to Fig. 8, the seventh embodiment mainly contains a first plastic film 2 5 71, a polyethylene foaming skin 70 and a second plastic film 72. The polyethylene foaming skin 70 contains an upper surface and a lower surface. The first plastic film 71 having an inner surface bonded with the upper surface of the polyethylene foaming skin 70.The first plastic film 71 contains a first outer film 711 and a first inner film 712. The first outer film 71:i contains an inner surface having first patterns thereon and the first patterns 7111 are visible from an outer surface of the first outer film 711. The first outer film 7I 1 has a thickness from 0.02mm to 0. lSmm.The f°rrst inner film 712 contains an outer surface and an inner surface, the outer surface of the first inner film 712 is bonded with the inner surface of the first outer film 711, the inner surface of the first inner film 712 is bonded with the sapper surface of the polyethylene foaming skin '70. The first inner film 7 i2 has a thickness from O.Olmm to 0. l5mm. The polyethylene foaming skin 70 has a foaming value from 1.9 PCF
to 6 PCF. The second plastic film 72 having an imaer surface bonded. with the lower surface of the polyethylene foaming skin 70. The second plastic film contains a second outer film 722 and a second inner film. 721. The second outer film 722 contains an inner surface having second patterns 7221 thereon and the second patterns 7221 are visible from an outer surface of the second outer film 722. The second inner f"11m 721 contains an outer surface and an inner surface. The outer surface of the second inner film 72 a is bonded with the inner surface of the second outer fi1m722.
The inner surface of the second inner film 721 is bonded with the lower surface of the 2 o polyethylene foaming skin 'lO.The second plastic film 72 has a thickness from 0.3mm to l.5mm. The first outer film 711 together with the first inner film 712 have plural c~ncaves 7112 on the outer surface of the first outer film 7:L 1 and on the inner surface of the first inner film 712. The upper surface of the polyethylene foaming skin 70 is united with the concaves 7112 at the inner surface of the fiavst inner film 712.
The present invention is not restricted to be used in slider. I~ can also be used as a surfing board. Numerous characteristics and advantages of the invention have been set forth in the foregoing descr~.ption, together with details of the structure and function of the invention, and the novel features thereof are pointed out in appended claims. The disclosure, however, is illustrated only, and changes may be made in detail, especially, in matters of shape, size and arrangement of parts, materials and the combination thereof within the principle of the invention, to the full extend indicated by the broad general meaning of the terms in which the appended claims are expressed.
_ ~1
Claims (8)
1. A slider comprising:
a polyethylene foaming board having a top surface, a bottom surface and edge surfaces;
a first plastic film bonded with said top surface and edge surfaces of said polyethylene foaming board, said first plastic film having a thickness from 0.02mm to 0.15mm and comprising a first outer film, a first inner film bonded with said first outer film, and first patterns defined between said first outer and inner films, said first patterns being visible from an outer surface of said first outer film, wherein said first outer film together with said first inner film have concaves thereon, said concaves on an inner surface of said first inner film being bonded with said polyethylene foaming board; and a second plastic film bonded with said bottom surface of said polyethylene foaming board, said second plastic film having a thickness from 0.3mm to 1.5mm;
wherein said thickness of said second plastic film is greater than said thickness of said first plastic film.
a polyethylene foaming board having a top surface, a bottom surface and edge surfaces;
a first plastic film bonded with said top surface and edge surfaces of said polyethylene foaming board, said first plastic film having a thickness from 0.02mm to 0.15mm and comprising a first outer film, a first inner film bonded with said first outer film, and first patterns defined between said first outer and inner films, said first patterns being visible from an outer surface of said first outer film, wherein said first outer film together with said first inner film have concaves thereon, said concaves on an inner surface of said first inner film being bonded with said polyethylene foaming board; and a second plastic film bonded with said bottom surface of said polyethylene foaming board, said second plastic film having a thickness from 0.3mm to 1.5mm;
wherein said thickness of said second plastic film is greater than said thickness of said first plastic film.
2. The slider of claim 1, wherein said second plastic film comprises a second outer film, a second inner film bonded with said second outer film, and second patterns defined between said second outer and inner films, said second patterns being visible from an outer surface of said second outer film, wherein an inner surface of said second inner film being bonded with said polyethylene foaming board.
3. The slider of claim 1, wherein said polyethylene foaming board comprises:
a polyethylene foaming core having a top surface, a bottom surface and edge surfaces;
and an upper polyethylene foaming skin having an inner surface, said inner surface of said upper polyethylene foaming skin being bonded with said top surface and said edge surfaces of said polyethylene foaming core, said concaves on said inner surface of said inner film being united with said upper polyethylene foaming skin, and said upper polyethylene foaming skin having a foaming rate less than a foaming rate of said polyethylene foaming core.
a polyethylene foaming core having a top surface, a bottom surface and edge surfaces;
and an upper polyethylene foaming skin having an inner surface, said inner surface of said upper polyethylene foaming skin being bonded with said top surface and said edge surfaces of said polyethylene foaming core, said concaves on said inner surface of said inner film being united with said upper polyethylene foaming skin, and said upper polyethylene foaming skin having a foaming rate less than a foaming rate of said polyethylene foaming core.
4. The slider of claim 1, wherein said polyethylene foaming board comprises:
a polyethylene foaming core having a top surface, a bottom surface and edge surfaces, said concaves on said inner surface of said inner film being united with said polyethylene foaming core; and a lower polyethylene foaming skin having an inner surface, said inner surface of said lower polyethylene foaming skin being bonded with said bottom surface of said polyethylene foaming core, said lower polyethylene foaming skin having a foaming rate less than a foaming rate of said polyethylene foaming core.
a polyethylene foaming core having a top surface, a bottom surface and edge surfaces, said concaves on said inner surface of said inner film being united with said polyethylene foaming core; and a lower polyethylene foaming skin having an inner surface, said inner surface of said lower polyethylene foaming skin being bonded with said bottom surface of said polyethylene foaming core, said lower polyethylene foaming skin having a foaming rate less than a foaming rate of said polyethylene foaming core.
5. The slider of claim 3, wherein said polyethylene foaming board further comprises a lower polyethylene foaming skin having an inner surface, said inner surface of said lower polyethylene foaming skin being bonded with said bottom surface of said polyethylene foaming core, said lower polyethylene foaming skin having a foaming rate less than a foaming rate of said polyethylene foaming core.
6. A slider comprising:
a polyethylene foaming skin, having an upper surface and a lower surface, and said polyethylene foaming skin having a foaming value from 1.9 PCF to 6 PCF;
a first plastic film, having an inner surface and a thickness from 0.02mm to 0.3mm, and said first plastic film comprising a first outer film, a first inner film bonded with said first outer film, and first patterns defined between said first outer and inner films, said first patterns being visible from an outer surface of said first outer film; wherein said first outer film together with said first inner film have concaves thereon, said concaves on an inner surface of said first inner film being bonded with said polyethylene foaming skin; and a second plastic film, having an inner surface bonded with said lower surface of said polyethylene foaming skin and a thickness from 0.3mm to 1.5mm; wherein said thickness of said second plastic film is greater than said thickness of said first plastic film.
a polyethylene foaming skin, having an upper surface and a lower surface, and said polyethylene foaming skin having a foaming value from 1.9 PCF to 6 PCF;
a first plastic film, having an inner surface and a thickness from 0.02mm to 0.3mm, and said first plastic film comprising a first outer film, a first inner film bonded with said first outer film, and first patterns defined between said first outer and inner films, said first patterns being visible from an outer surface of said first outer film; wherein said first outer film together with said first inner film have concaves thereon, said concaves on an inner surface of said first inner film being bonded with said polyethylene foaming skin; and a second plastic film, having an inner surface bonded with said lower surface of said polyethylene foaming skin and a thickness from 0.3mm to 1.5mm; wherein said thickness of said second plastic film is greater than said thickness of said first plastic film.
7. The slider of claim 6, wherein said second plastic film comprises a second outer film, a second inner film bonded with said second outer film, and second patterns defined between said second outer and inner films, said second patterns being visible from an outer surface of said second outer film, wherein an inner surface of said second inner film being bonded with said lower surface of said polyethylene foaming skin.
8. The slider of claim 5, wherein said second plastic film comprises a second outer film, a second inner film bonded with said second outer film, and second patterns defined between said second outer and inner films, said second patterns being visible from an outer surface of said second outer film, wherein an inner surface of said second inner film being bonded with said lower polyethylene foaming skin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW092203056 | 2003-02-25 | ||
| TW92203056 | 2003-02-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2450774A1 CA2450774A1 (en) | 2004-08-25 |
| CA2450774C true CA2450774C (en) | 2008-05-13 |
Family
ID=32906961
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002450774A Expired - Lifetime CA2450774C (en) | 2003-02-25 | 2003-12-23 | Slider |
| CA 2458284 Expired - Lifetime CA2458284C (en) | 2003-02-25 | 2004-02-23 | Slider having improved resistance to erosion and wear |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2458284 Expired - Lifetime CA2458284C (en) | 2003-02-25 | 2004-02-23 | Slider having improved resistance to erosion and wear |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2450774C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7422228B2 (en) | 2004-12-10 | 2008-09-09 | Wah Kan Cheung | Sports board |
-
2003
- 2003-12-23 CA CA002450774A patent/CA2450774C/en not_active Expired - Lifetime
-
2004
- 2004-02-23 CA CA 2458284 patent/CA2458284C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2450774A1 (en) | 2004-08-25 |
| CA2458284A1 (en) | 2004-08-25 |
| CA2458284C (en) | 2007-07-10 |
| CA2458284F (en) | 2004-08-25 |
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| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20231227 |