Polyethylene film modifying device

A polyethylene film modification technology, which is applied in the field of polyethylene film modification devices, can solve the problems of slow speed, low efficiency, and inability to realize controllable cross-linking modification of polyethylene film, and achieve the effect of constant tension

Active Publication Date: 2013-01-30
海南经济特区中质猎鹰智能勘测科技有限公司
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Domestic low-energy electron accelerators generally adopt a scanning structure. The electron accelerators with this structure are large in size, low in efficiency, and slow in speed. Shielding devices need to be added
Electronic curtain electron accelerators have been applied in developed countries such as the United States and Japan, but only in a small number of foreign-owned and joint ventures in China, all of which are manufactured abroad, and the voltage and current intensity of existing products cannot be continuously adjusted. , can not realize the controllable cross-linking modification of polyethylene film

Method used

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0022] Semi-cross-linking modification means that the electron beam only penetrates half the thickness of the low-density polyethylene (LDPE) film, so that the upper half of the LDPE layer is cross-linked and the tensile strength of the LDPE is improved, while the lower half layer is not irradiated and cross-linked. Linked to maintain the original toughness and heat sealing performance of LDPE.

[0023] A polyethylene film modification device disclosed in the present invention sequentially includes an unwinding device, a front traction device, an electron beam irradiation device, a rear traction device, and a winding device, and is used to control the various devices and receive the The control device of the feedback sign...

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Abstract

The invention discloses a polyethylene film modifying device, which comprises an unwinding device, a front traction device, an electronic beam radiation device, a back traction device, a winding device and a control device in sequence, wherein the control device is used for controlling each device and receiving signals fed back by each device; the unwinding device and the winding device are used for conveying and receiving a polyethylene film respectively; the front and back traction devices are used for leading the conveying of the polyethylene film; and the electronic beam radiating device is used for radiating the polyethylene film passing through the electronic radiating device to modify the polyethylene film. Due to the adoption of the polyethylene film modifying device provide by the invention, the time of radiation crosslinking modification can be shortened; and the radiating high pressure of an electronic accelerator is adjusted for changing the radiation penetration depth, so that half crosslinking modification or gradient crosslinking modification of the polyethylene film is realized.

Description

technical field [0001] The invention relates to the technical field of material modification, in particular to a polyethylene film modification device. Background technique [0002] Polyethylene film is used as the innermost layer (heat seal layer) in the multilayer structure of flexible packaging, and acts as a support layer in some stand-up pouches. Due to its low tensile strength (tensile strength) and easy deformation, it needs Larger thickness (30-70 microns) can meet the requirements of processing and packaging; in this way, polyethylene accounts for more than 40% of the total weight of flexible packaging, thickness accounts for 40-60%, and the cost accounts for about 50% of the total cost of the composite film. [0003] In order to improve the tensile strength of low-density polyethylene (LDPE) and reduce the thickness and dosage of polyethylene film, modified polyethylene resin is generally used in the world to produce polyethylene film, with LDPE as the main materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C71/04B29L7/00B29K23/00
Inventor 曹少中
Owner 海南经济特区中质猎鹰智能勘测科技有限公司
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