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SU1599238A1 - Method of welding plastic polymeric films - Google Patents

Method of welding plastic polymeric films Download PDF

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Publication number
SU1599238A1
SU1599238A1 SU884392851A SU4392851A SU1599238A1 SU 1599238 A1 SU1599238 A1 SU 1599238A1 SU 884392851 A SU884392851 A SU 884392851A SU 4392851 A SU4392851 A SU 4392851A SU 1599238 A1 SU1599238 A1 SU 1599238A1
Authority
SU
USSR - Soviet Union
Prior art keywords
welding
temperature
films
light
stage
Prior art date
Application number
SU884392851A
Other languages
Russian (ru)
Inventor
Михаил Ульянович Белый
Виктор Федорович Гришачев
Людмила Евгеньевна Желудик
Георгий Лукич Конончук
Юрий Игнатьевич Кузовков
Татьяна Александровна Курченко
Тарас Павлович Танцюра
Анатолий Васильевич Булавка
Original Assignee
Киевский Государственный Университет Им.Т.Г.Шевченко
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Application filed by Киевский Государственный Университет Им.Т.Г.Шевченко filed Critical Киевский Государственный Университет Им.Т.Г.Шевченко
Priority to SU884392851A priority Critical patent/SU1599238A1/en
Application granted granted Critical
Publication of SU1599238A1 publication Critical patent/SU1599238A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface direct heating of the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1454—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B29C65/1458—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface scanning at least one of the parts to be joined once, i.e. contour welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1464—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators
    • B29C65/1467—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1477—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of an absorber or impact modifier
    • B29C65/148—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of an absorber or impact modifier placed at the interface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83415—Roller, cylinder or drum types the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • B29C66/91643—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile
    • B29C66/91645—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile by steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/735—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/939—Measuring or controlling the joining process by measuring or controlling the speed characterised by specific speed values or ranges

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Изобретение относитс  к сварке пластмасс и может быть использовано при изготовлении изделий из пленочных термопластичных материалов. Цель - повышение производительности процесса. Дл  этого в способе сварки термопластичных полимерных пленок на первой стадии светопоглощающий слой нагревают в импульсном режиме до температуры, лежащей в интервале между температурой сварки и температурой деструкции материала пленок. Дл  нанесени  светопоглощающего сло  используют порошок. 1 ил., 1 табл.The invention relates to the welding of plastics and can be used in the manufacture of products from thermoplastic film materials. The goal is to increase the productivity of the process. To do this, in the method of welding thermoplastic polymer films in the first stage, the light absorbing layer is heated in a pulsed mode to a temperature between the welding temperature and the temperature of destruction of the film material. Powder is used to apply the light absorbing layer. 1 ill., 1 tab.

Description

Изобретение относитс  к способам сварки пластмасс и может быть использовано при изготовлении изделий из пленочных термопластичных материалов.The invention relates to methods of welding plastics and can be used in the manufacture of products from thermoplastic film materials.

Цель изобретени  - повьшение производительности процесса.The purpose of the invention is to increase the productivity of the process.

На чертеже изображена схема осуществлени  способа.The drawing shows a scheme for implementing the method.

Способ сварки термопластичных полимерных пленок осуществл ют следую- . щим образом.The method of welding thermoplastic polymer films is carried out as follows. shimm way.

На соедин емую поверхность пленок 1 нанос т светопоглощающий слой в виде светопоглощающего порошка 2, поступающего из дозаторов 3. Далее пленки со светопоглощающим слоем проход т под оптическими нагревател ми-4, излучатели 5 которых выполнены в виде галогенных ламп накаливани  с точечными элементами накала, а рефлекторы имеют эллиптическую форму.A light-absorbing layer in the form of a light-absorbing powder 2 coming from the metering devices 3 is applied to the joining surface of films 1. Then the films with a light-absorbing layer pass under optical heaters-4, the radiators 5 of which are made in the form of halogen incandescent bulbs with dotted elements of heat, reflectors are elliptical.

II

При этом светопоглощающий слой нагревают излучением до температуры, лежащей в интервале между температурой сварки (Т(.) и температурой деструкции (Тд) материала пленок. Нагрев осуществл ют в импульсном режиме. Разогретые ча стицы порошка расплавл - ют материал пленок в местах соприкосновени  с ним и внедр ютс  в пленку. При этом по мере внедрени  частиц возрастает площадь контакта, через которую осуществл етс  передача тепла материалу от нагретых излучением частиц . Максимальна  площадь контакта соответствует полному внедрению частиц порошка в материал. Таким образом , после первой стадии импульсного нагрева пленки имеют увеличенную поверхность теплопередачи. Далее они : попадают в зону действи  нагревател  6. Излучатель 7 нагревател  6 выполшIn this case, the light-absorbing layer is heated by radiation to a temperature lying between the welding temperature (T (.) And the destruction temperature (Td) of the film material. The heating is carried out in a pulsed mode. The heated powder particles melt the film material at the points of contact with it and embedded in the film. As the particles penetrate, the contact area through which the heat is transferred to the material from the heated particles is increased. The maximum contact area corresponds to the complete incorporation of . Powder material in this way, after the first stage of the pulse heating of the film have an increased heat transfer surface They further:. Fall into the zone of action of the heater 6. The heater 6 7 emitter vypolsh

X) ;ОX); O

tsDtsD

::

0000

нен в виде трубчатой галогенной лампы накаливани , а рефлектор имеет параболическую форму. Нагреватель 6 регулируют на режим работы, при котором обеспечиваетс  поддержание на втрой стадии нагрева температуры частиц порошка 2 на уровне температуры сварки материала пленок. При этом происходит непрерывный нагрев излучением светопоглощающего порошка. При заданной мощности нагревател  6 за счет сформированной на первой стадии нагрева увеличенной площади теплопередачи врем , требуемое на перевод основной массы полимерного материала в в зкотекучее состо ние, уменьшаетс . Скорость сварки, а следовательно производительно.сть процесса возрастает . Нагретые до температуры сварки соедин емые поверхности пленок привод т в контакт и сдавливают прижимными валками 8.It is in the form of a tubular halogen incandescent lamp, and the reflector is parabolic. The heater 6 is adjusted to the mode of operation in which the temperature of the powder particles 2 is maintained at the second heating stage at the level of the welding temperature of the film material. When this occurs, continuous heating by radiation of the light absorbing powder. At a given power of the heater 6, due to the increased heat transfer area formed at the first stage of heating, the time required for the transfer of the bulk of the polymer material to the flowing state is reduced. The welding speed and, consequently, the productivity of the process increases. The welded surfaces of the films heated to the welding temperature are brought into contact and squeezed by pressing rolls 8.

Пример. Сварочна  установка, на которой осуществл ют сварку плено имеет следующие технические характеристики . Мощность каждого из нагревателей 4 составл ет 150 Вт, излучателем  вл етс  лампа типа КГМ 24-150 (ТУ 16-535.483-75).Тело накала имеет форму плоской спирали, ее размеры 2,9x5,8 мм. Мощность нагревател  6 составл ет 500 Вт, излучателем  вл етс  лампа типа КГМ 110-500 (ТУ 16- 545.010-75). Тело накала представл ет собой цилиндрическую спираль диаметром 1,06 мм, длина спирали равна 64 мм. При указанных габаритах тела накала прот женность зоны непрерывного облучени , приход ща с  на каждую из соедин емых пленок, составл ет 32 мм. Ширина сварного шва, определ ема  шириной зоны нанесени  светопоглощающего порошка, равна 5 мм (ее задают при регулировке дозаторов 3), Площадь зоны непрерывного облучени  Sg 32-5 160 мм . В качестве свариваемых материалов используют пленки из полиэтилена низкой плотности марки 2020А ( 15902-020) толщиной 0,2.ммExample. The welding unit where the Plenos are welded has the following technical characteristics. The power of each of the heaters 4 is 150 W, the radiator is a KGM 24-150 type lamp (TU 16-535.483-75). The body heat has the shape of a flat helix, its dimensions are 2.9x5.8 mm. The power of the heater 6 is 500 W, the radiator is a KGM 110-500 lamp (TU 16-545.010-75). The filament body is a cylindrical helix with a diameter of 1.06 mm, the length of the helix is 64 mm. At the indicated dimensions of the filament body, the length of the continuous irradiation zone per each of the films to be joined is 32 mm. The width of the weld, determined by the width of the zone of application of the light absorbing powder, is 5 mm (it is set when adjusting the feeders 3). The area of the zone of continuous irradiation Sg 32-5 is 160 mm. Films of low-density polyethylene grade 2020A (15902-020) with a thickness of 0.2 mm are used as welded materials.

Температура сварки Т, 190 С. Тем- - пература начала термической деструк0Temperature of welding T, 190 C. Temp. Temperature of the onset of thermal destruction

5five

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Claims (1)

ции Тд 350 С. При световой сварке пр мым нагревом полиэтиленовых ненаполненных пленок скорость сварки может достигать 0,5 м/с. Пусть исходна  скорость сварки Vд 0,5 м/с. Увеличение скорости сварки (производительности технологического процесса ) обусловлено увеличением площади поверхности теплопередачи по сравнению с исходной площадью S, т.е. V:Vo S:Sg, где V - скорость сварки, соответствующа  площади поверхности теплопередачи S, сформированной после стадии импульсного облучени  пленок. В качестве светопоглощающего порошка выбран технический углерод (СТ СЭВ 3766-82) со среднеарифметическими радиусами частиц г (l,5-5,4)if 0 мм. Поверхностную плотность п нанесени  частиц варьируют в пределах (0,5-8,3)- 10 мм . Максимальную температуру Т частиц на импульсной стадии нагрева поддерживают на уровне 340°С (), температуру частиц на непрерывной стадии нагрева - на уровне 190°С (). В таблице приведены данные, характеризующие относительное увеличение производительности технологического процесса при заданных параметрах режима сварки (относительное увеличение скорости сварки). Формула изобретени Td 350 C. When light welding by direct heating of polyethylene unfilled films, the welding speed can reach 0.5 m / s. Let the initial welding speed Vd 0.5 m / s. The increase in welding speed (process performance) is due to an increase in heat transfer surface area compared to the original area S, i.e. V: Vo S: Sg, where V is the welding speed corresponding to the heat transfer surface area S formed after the stage of pulsed irradiation of films. Technical carbon (ST SEV 3766-82) with arithmetic-average particle radii of g (l, 5–5.4) if 0 mm was chosen as the light-absorbing powder. The surface density for the deposition of particles varies in the range (0.5-8.3) - 10 mm. The maximum temperature T of the particles at the pulsed heating stage is maintained at 340 ° C (), the temperature of the particles at the continuous heating stage is maintained at 190 ° C (). The table shows the data characterizing the relative increase in the productivity of the technological process for given parameters of the welding mode (relative increase in the welding speed). Invention Formula Способ сварки термопластичных по- лимернйх пленок, включающий нанесение на соедин емую поверхность пленок светопоглощающего сло , нагрев его излучением в две стадии до температуры сварки материала пленок, приведение соедин емых поверхностей в контакт и сдавливание пленок, о т л и- ч.ающийс  тем, что, с целью повьппени  производительности процесса , на первой стадии светопоглощаю- щий слой нагревают в импульсном режиме до температуры, лежащей в интервале между, температурой сварки и температурой деструкции материала пленок , при этом в качестве светопоглощающего сло  используют порошок.The method of welding thermoplastic polymeric films, which involves applying a light-absorbing layer to the joining surface of the films, heating it with radiation in two stages to the temperature of welding the material of the films, bringing the connected surfaces into contact and squeezing the films, so that that, in order to maintain the performance of the process, in the first stage the light absorbing layer is heated in a pulsed mode to a temperature in the interval between the welding temperature and the temperature of destruction of the film material, while powder is used as the light absorbing layer.
SU884392851A 1988-03-17 1988-03-17 Method of welding plastic polymeric films SU1599238A1 (en)

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Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Авторское свидетельство СССР № 1004127, кл. В 29 С 65/14, 1979 Авто,рское свидетельство СССР № 1502396, кл. В 29 С 65/14, 1987. *

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