CN109006084A - The black central, clear Multifunctional composite mulching film of two silver medals of one kind and its manufacturing method - Google Patents

Abstract

The invention belongs to the technical field of mulching films, and discloses a transparent multi-functional composite mulching film with silver and black in the middle and a manufacturing method thereof. The composite mulching film includes a transparent film body in the middle. The black film body, the left side and the right side of the transparent film body are respectively covered with silver film bodies, and the left side and the right side of the transparent film body are crossed between the black film body and the silver film body through thermoplastic extrusion molding respectively. One-piece composite structure, protective belts are connected between the transparent film body and the silver film body, and between the transparent film body and the black film body, which have the function of weeding, improve the heat preservation effect, have good light transmission performance, and promote the development of crop root system and Germination and growth, good reflective performance, and has the function of resistance to diseases and insect pests.

Description

A kind of two-silver-black intermediate transparent multifunctional composite mulch film and its manufacturing method

technical field

The invention belongs to the technical field of mulching films, and in particular relates to a transparent multifunctional composite mulching film with silver and black in the middle and a manufacturing method thereof.

Background technique

At present, in the field of agricultural planting, transparent mulch structures are mostly used, and most of them have the problems of no weeding function and poor heat preservation effect. The structure of black mulch or silver black mulch is also used in the prior art, but black mulch or silver black mulch often has problems such as opacity, low ground temperature in winter greenhouses, no germination of on-demand seeds, and slow root development. In addition, there is also a black and white mulch structure in the prior art, but the black mulch has poor reflective performance and does not have the function of resisting diseases and insect pests.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides a two-silver black that can improve the heat preservation effect, has good light transmission performance, promotes root system development and germination growth of crops, has good light reflection performance, has the function of resisting diseases and insect pests, and has the function of weeding. Intermediate transparent multifunctional composite mulching film and its manufacturing method.

The present invention is achieved in this way. On the one hand, the present invention provides a transparent multifunctional composite mulch film with two silvers and blacks in the middle. The composite mulch film includes a transparent film body in the middle, and black Membrane body, the left side and the right side of the transparent membrane body are respectively covered with silver membrane body, and the left side and the right side of the transparent membrane body are crossed by thermoplastic extrusion molding to form a whole between the black membrane body and the silver membrane body Type composite structure; protective belts are respectively connected between the transparent film body and the silver film body, and between the transparent film body and the black film body.

The two-silver-black intermediate transparent multi-functional composite mulch film of the present invention, where crops are planted on the transparent film body, absorbs sunlight during the day, keeps moisture and moisture, increases photosynthesis, and the black film body is located at the lower position, which is opaque and inhibits the growth of weeds , play the role of weeding and heat preservation, and release heat at night to promote crop growth. The temperature in the greenhouse is high during the day, and the composite structure of black film body, silver film body and transparent film body can effectively reduce the ground temperature in the greenhouse compared with ordinary transparent film. The temperature of the greenhouse is low at night. The composite structure of black film, silver film and transparent film can effectively increase the ground temperature in the greenhouse compared with ordinary transparent film, and can reduce the chance of freezing damage in winter. The composite structure of black film body, silver film body and transparent film body, the silver film body is located on the top, and its reflective effect is good, which can destroy the growth environment of bacteria and viruses, play the role of resisting diseases and insect pests, reducing the amount of pesticides, and can effectively reduce farmers' production. cost, reduce pesticide residues in fruits and vegetables; and can promote the coloring of fruits and vegetables, increase yield, and increase farmers' income; its protective belt can play the role of anti-tearing and anti-oxidation, and can solve the problem of rapid aging of silver film and black film at the joint , easy to crack the problem.

Another aspect of the present invention provides a method for manufacturing the two-silver-black intermediate transparent multifunctional composite mulch film as described in one aspect of the present invention, the manufacturing method comprising the following steps:

Add black polyethylene masterbatch, transparent polyethylene masterbatch and silver polyethylene masterbatch to the feeding ports of the three feeding hosts respectively;

Electromelt the black polyethylene masterbatch, transparent polyethylene masterbatch and silver polyethylene masterbatch respectively in the three feeding hosts;

The black polyethylene masterbatch, transparent polyethylene masterbatch and silver polyethylene masterbatch in the three feeding hosts are sequentially processed on the left and right sides of the operation platform, the overall area of the operation platform and the left and right sides of the operation platform. Unwinding, blow molding and co-film head extrusion operations.

Advantage of the present invention is as follows:

The transparent multi-functional composite mulch film in the middle of silver and black and its manufacturing method can solve the problems of poor thermal insulation effect and no weeding function in the transparent mulch film structure; , In winter, the temperature of the greenhouse is low, the on-demand seeds do not germinate, and the root system develops slowly; it can solve the problem that the black film has poor reflective performance and does not have the function of resisting diseases and insect pests; it has the function of weeding, improves the heat preservation effect, and has good light transmission performance. Promote the development of crop root system and germination growth, good reflective performance, and have the function of resistance to diseases and insect pests; it can not only keep moisture, increase photosynthesis, but also inhibit the growth of weeds, play the role of weeding and heat preservation, it can release heat at night, promote Crop growth; it can effectively reduce the ground temperature in the greenhouse when the temperature in the greenhouse is high during the day; it can effectively increase the ground temperature in the greenhouse when the temperature in the greenhouse is low at night, and can reduce the probability of freezing damage in extreme cold conditions in winter; its reflective The effect is good, it can destroy the growth environment of bacteria and viruses, play the role of resisting diseases and insect pests, reducing the amount of pesticides, can effectively reduce the production cost of farmers, reduce the residues of pesticides in fruits and vegetables; and can promote the coloring of fruits and vegetables, increase production, and increase farmers' income; its protective belt It can solve the problem of fast aging and easy cracking at the junction of the silver film and the black film, and has the functions of anti-tearing and anti-oxidation; it has the function of weeding, improves the heat preservation effect, has good light transmission performance, and promotes the growth of crop roots And germination and growth, good reflective performance, anti-ultraviolet, long service life, good anti-aging performance, anti-disease and insect pest function, adding degradable masterbatch, can achieve automatic decomposition function, recyclable, good environmental protection performance.

Description of drawings

Fig. 1 is a top view of a transparent multi-functional composite mulch film with two silvers and blacks in the middle according to an embodiment of the present invention.

Fig. 2 is a bottom view of the transparent multi-functional composite mulching film with silver and black in the middle of the present invention according to the embodiment shown in Fig. 1 .

Fig. 3 is a top view of a transparent multifunctional composite mulch film with silver and black in the middle according to another embodiment of the present invention.

Fig. 4 is a top view of a transparent multi-functional composite mulch film with silver and black layers in another embodiment of the present invention.

In the figure, 1 is a transparent film body, 2 is a silver film body, 3 is a black film body, 4 is a protective tape, 5 is a tear line, 6 is an adhesive film layer, and 7 is a nest edge.

Detailed ways

Describe the specific embodiment of the present invention below in conjunction with accompanying drawing and embodiment:

Example 1:

A kind of two-silver-black intermediate transparent multifunctional composite mulch film, see Fig. 1, described composite mulch film comprises the transparent film body 1 in the middle, it is characterized in that, the left side and the right side of the transparent film body 1 are laid with black film bodies respectively 3. The left side and the right side of the transparent film body 1 are respectively covered with silver film body 2, and the left side and the right side of the transparent film body 1 are respectively crossed to the black film body 3 and the silver film body 2 through thermoplastic extrusion molding An integrated composite structure is formed between them; protective tapes 4 are respectively connected between the transparent film body 1 and the silver film body 2, and between the transparent film body 1 and the black film body 3.

The transparent multi-functional composite mulch film in the middle of the two silvers and blacks of this embodiment has crops planted in 1 place of its transparent film body, which absorbs sunlight during the day, keeps moisture and keeps moisture, and increases photosynthesis. The growth of weeds plays the role of weeding and heat preservation, and it releases heat at night to promote crop growth. The temperature of the greenhouse is high during the day, and the composite structure of the black film body 3, the silver film body 2 and the transparent film body 1 can effectively reduce the ground temperature in the greenhouse compared with ordinary transparent film. The temperature of the greenhouse is low at night, and the composite structure of the black film body 3, the silver film body 2 and the transparent film body 1, compared with ordinary transparent film, can effectively increase the ground temperature in the greenhouse, and can reduce the occurrence of freezing damage in winter. probability. The composite structure of the black film body 3, the silver film body 2 and the transparent film body 1, the silver film body 2 is located on the top, and its reflective effect is good, which can destroy the growth environment of bacteria and viruses, play the role of resisting diseases and insect pests, and reducing the amount of pesticides. Effectively reduce farmers' production costs and reduce pesticide residues in fruits and vegetables; and can promote the coloring of fruits and vegetables, increase yields, and increase farmers' income; the protective belt 4 can play the role of anti-tearing and anti-oxidation, and can solve the problem of silver film body 2 and black film Body 3 ages quickly at the connection and is easy to crack. The length of the composite plastic film can be adjusted according to the needs of users.

It should be noted that the protective tape 4 here can be a silver film body 2 .

In another specific embodiment, the transparent film body 1 , the black film body 3 and the silver film body 2 are all in the shape of rectangular strips. In this way, the manufacture and use of the conformable mulch can be facilitated.

In another specific embodiment, the length and width of the black film body 3 and the silver film body 2 are respectively consistent. In this way, the manufacture and use of the conformable mulch can be facilitated.

In another specific embodiment, the black film body 3 coincides with the central point of the silver film body 2 . In this way, the manufacture and use of the conformable mulch can be facilitated.

Example 2:

A transparent multi-functional composite mulching film with silver and black in the middle, as shown in Figure 2, is similar to Example 1, the difference is that there are two transparent film bodies 1, and the two transparent film bodies 1 are arranged side by side in the left and right directions. In this way, the coverage area of the transparent film body 1 can be increased, which is suitable for growing crops with a larger area.

In another specific embodiment, the number of transparent film bodies 1 is two, and the two transparent film bodies 1 are arranged side by side in parallel in the left-right direction. In this way, the manufacture and use of the conformable mulch can be facilitated.

Example 3:

A transparent multi-functional composite mulching film with silver and black in the middle is similar to Example 1, except that the composite mulching film is provided with a transverse tearing line 5 . In this way, the composite mulch film can be conveniently torn through the tear line 5 during use.

It should be noted that the tearing line 5 here may be at least two through holes arranged at intervals. The through holes may be strip holes. The strip-shaped holes may be rectangular holes. The sides of the two ends of the rectangular hole in the length direction may be arc-shaped sides protruding outward. In this way, the manufacture and use of the tear line 5 can be facilitated. The outer side here refers to the side away from the center of the rectangular hole relative to the center of the rectangular hole as the outer side. At least two of the rectangular holes may be located on the same straight line. The straight line may be perpendicular to the length direction of the composite plastic film.

In another specific embodiment, the composite mulch film at the tear line 5 is covered with an adhesive film layer 6 . In this way, the adhesive film layer 6 can cover the tearing line 5, so as to prevent the composite film from breaking due to the accidental tearing of the tearing line 5. In addition, the adhesive film layer 6 covers the tearing line 5 of the rectangular hole structure, and also prevents the tearing line 5 from being ventilated or leaking water, so as to ensure the normal use of the composite plastic film that the tearing line 5 is not torn out.

It should be noted that the adhesive film layer 6 may be rectangular. The length direction of the adhesive film layer 6 may be consistent with the length direction of the tear line 5 . The center of the adhesive film layer 6 may be located on the tear line 5 . In this way, the adhesive film layer 6 can better cover the tear line 5 . The corners of the adhesive film layer 6 can be provided with a dimple edge 7 with a diagonal structure, and the glue layer at the dimple edge 7 can be folded inward, so that there is no glue layer structure under the dimple edge 7, that is, the dimple edge 7 is in the same position as the Described composite film layer is not connected, and like this, can conveniently pass through pinch nest edge 7 places, glued film layer 6 is torn, to remove glued film layer 6, to carry out the operation of tearing tearing line 5 in the next step. In addition, a pull ring hole may also be provided on the edge of the nest 7, so that the glue film layer 6 can be pulled conveniently by pulling the ring hole. The adhesive film layer 6 can be covered on the upper side where the silver film body 2 of the composite mulch film is located, or can be covered on the lower side where the black film body 3 of the composite mulch film is located. Generally speaking, the adhesive film layer 6 covers When on the upper side where the silver film body 2 of the composite plastic film is located, it is more convenient and practical.

Example 4:

A kind of manufacture method of the transparent multifunctional composite mulch film in the middle of two silver blacks as described in any one of embodiment 1 to embodiment 3, comprises the following steps:

Add black polyethylene masterbatch, transparent polyethylene masterbatch and silver polyethylene masterbatch to the feeding ports of the three feeding hosts respectively;

Electromelt the black polyethylene masterbatch, transparent polyethylene masterbatch and silver polyethylene masterbatch respectively in the three feeding hosts;

The black polyethylene masterbatch, transparent polyethylene masterbatch and silver polyethylene masterbatch in the three feeding hosts are sequentially processed on the left and right sides of the operation platform, the overall area of the operation platform and the left and right sides of the operation platform. Unwinding, blow molding and co-film head extrusion operations.

In another specific embodiment, the composite mulch film obtained after the extrusion operation of the common film head is subjected to edge trimming.

The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and can also be made within the scope of knowledge of those of ordinary skill in the art without departing from the gist of the present invention. kind of change.

Many other changes and modifications can be made without departing from the spirit and scope of the present invention. It should be understood that the invention is not limited to the particular embodiments, but that the scope of the invention is defined by the appended claims.

Claims (10)

1. a kind of transparent multi-functional composite mulch film in the middle of two silver and black, described composite mulch film comprises the transparent film body (1) in the middle, it is characterized in that, the left side and the right side of transparent film body (1) are laid with black respectively below The film body (3), the left side and the right side of the transparent film body (1) are respectively laid with a silver film body (2), and the left side and the right side of the transparent film body (1) are respectively crossed by thermoplastic extrusion. Between the black film body (3) and the silver film body (2) to form an integrated composite structure; between the transparent film body (1) and the silver film body (2), and between the transparent film body (1) and the black film body ( 3) are respectively connected with protective belts (4). 2. The transparent multi-functional composite mulch film between two silvers and blacks as claimed in claim 1, characterized in that, the transparent film body (1), the black film body (3) and the silver film body (2) are all in the shape of rectangular strips. 3. The transparent multi-functional composite mulch film between two silver and black as claimed in claim 2, characterized in that the length and width of the black film body (3) and the silver film body (2) are respectively consistent. 4. The transparent multifunctional composite mulch film between two silver and black as claimed in claim 3, characterized in that, the black film body (3) coincides with the central point of the silver film body (2). 5. The transparent multi-functional composite mulch film between two silver and black as claimed in claim 4, characterized in that, the number of transparent film bodies (1) is two, and the two transparent film bodies (1) are distributed side by side in the left and right direction. 6. The transparent multifunctional composite mulch film with silver and black intermediates according to claim 5, characterized in that, the composite mulch film is provided with a transverse tearing line (5). 7. The transparent multifunctional composite mulching film between two silver and black according to claim 6, characterized in that, the composite mulching film at the tearing line (5) is covered with an adhesive film layer (6). 8. The transparent multi-functional composite mulch film with silver and black intermediates as claimed in claim 7, characterized in that, the corners of the adhesive film layer (6) can be provided with nest edges (7) with oblique lines. 9. The manufacture method of the transparent multifunctional composite mulch film in the middle of two silver blacks as described in any one of claims 1-8, is characterized in that, comprises the following steps: Add black polyethylene masterbatch, transparent polyethylene masterbatch and silver polyethylene masterbatch to the feeding ports of the three feeding hosts respectively; Electromelt the black polyethylene masterbatch, transparent polyethylene masterbatch and silver polyethylene masterbatch respectively in the three feeding hosts; The black polyethylene masterbatch, transparent polyethylene masterbatch and silver polyethylene masterbatch in the three feeding hosts are sequentially processed on the left and right sides of the operation platform, the overall area of the operation platform and the left and right sides of the operation platform. Unwinding, blow molding and co-film head extrusion operations. 10. The manufacturing method of two silver-black intermediate transparent multifunctional composite mulch films according to claim 9, characterized in that the composite mulch film obtained after the extrusion operation of the common film head is subjected to edge trimming.