Manufacturing technological process of heat seal heat shrinkable sleeve

Abstract

The invention relates to a manufacturing technological process of a heat seal heat shrinkable sleeve. The technological process comprises the following steps of: 1) taking out plastic base-material and melt, manufacturing a composite semi-finished product material of a substrate layer and a melt layer and manufacturing a heat shrinkable tape finished products with different widths and lengths according to diameter requirements; 2) cutting on the heat shrinkable substrate and peeling the substrate layer and the melt layer compounded into a double-layer heat shrinkable tape; 3) carrying out electrothermal heat seal on the substrate / substrate two ends on equipment; 4) carrying out stitching cooling on the part of the substrate treated with heat seal to satisfy temperature requirement of a next operation; 5) carrying out wind-heat heat seal on the cooled substrate and a first sol layer; 6) carrying out wind-heat heat seal on the first sol layer and a second sol layer; 7) finishing a welding side terminal. The invention effectively solves a problem of shrinkage of a heat shrinkable tape, substantially increases production efficiency and has wide market prospect.

Description

technical field [0001] The invention relates to a manufacturing process of a plastic product, in particular to a manufacturing process flow of a heat-sealing heat-shrinkable sleeve. Background technique [0002] In the mid-to-late 1990s, the oil and gas industry began to apply heat shrinkable products, and later expanded to urban gas pipelines, water pipelines and other fields. At present, the equipment for producing heat-shrinkable tapes is relatively backward in technology, which affects the production of heat-shrinkable products and seriously restricts the development of the industry. In the existing technology, when producing heat shrinkable sleeves, it relies on stretching when producing PE substrates, and glues them after radiation irradiation to become heat shrinkable products. However, due to the low level of automation, it is impossible to form an accurate control of the shrinkage rate, which is about 20- Within 30%, the shrinkage is unstable, resulting in slow con...

AI Technical Summary

Problems solved by technology

At present, the equipment for producing heat-shrinkable tapes is relatively backward in technology, which affects the production of heat-shrinkable products and seriously restricts the development of the industry.

In the existing technology, when producing heat shrinkable sleeves, it relies on stretching when producing PE substrates, and glues them after radiation irradiation to become heat shrinkable products. However, due to the low level of automation, it is impossible to form an accurate control of the shrinkage rate, which is about 20- Within 30%, the shrinkage is unstable, resulting in slow construction, time-consuming, energy-consuming, poor reliability of coating quality, and affecting project quality