CN207128237U

CN207128237U - Film line

Info

Publication number: CN207128237U
Application number: CN201720572928.6U
Authority: CN
Inventors: 刘朔娆
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-22
Filing date: 2017-05-22
Publication date: 2018-03-23
Anticipated expiration: 2027-05-22

Abstract

Originally it is new to disclose a kind of film line, the discharging opening connecting T-shaped mouth mold (2) of extruder (1), the opening shape of T-shaped mouth mold (2) is a slit, crack between the slit face hold-down roller (3) and main chill roll (4), main chill roll (4) and from chill roll (5) chrome-faced, main chill roll (4) and coolant is passed through inside the chill roll (5), the jockey pulley (6) of one group of S-shaped distribution is set afterwards from chill roll (5), air knife (7) has been set gradually after jockey pulley (6), β calibrators (8) and wrap-up (9).This new efficiency high.

Description

Film line

Technical field

Originally it is new to be related to plastic shaping, relate more specifically to a kind of film line.

Background technology

Plastic sheeting is to use polyvinyl chloride, polyethylene, polypropylene, polystyrene and film made of other resins, is used In packaging, and as coating layer.Commercially shared share is increasing for plastics package and plastic packet product, particularly Composite plastic flexible package, the fields such as food, medicine, chemical industry are had been widely used for, wherein again with packaging for foodstuff proportion Maximum, such as beverage packaging, quick-frozen food packaging, cooking food packaging, fast food packaging etc., these products are all given birth to people Work brings great convenience.

Utility model content

It is the defects of for prior art, originally new to provide a kind of film line.

A kind of film line, the discharging opening connecting T-shaped mouth mold 2 of extruder 1, the opening shape of T-shaped mouth mold 2 is one narrow Seam, the crack between the slit face hold-down roller 3 and main chill roll 4, main chill roll 4 and from the chrome-faced of chill roll 5, main cooling Roller 4 and coolant is passed through inside chill roll 5, the jockey pulley 6 of one group of S-shaped distribution is set after chill roll 5, in jockey pulley 6 Air knife 7, β calibrators 8 and wrap-up 9 have been set gradually afterwards；Extruder 1 is single screw extrusion machine, screw diameter 90- 200mm, screw rod are the metering type screw with mixing refining head；The T-shaped breadth 2.4m of mouth mold 2, die lip gap are 0.3-0.5mm.

Optionally, the width of air knife 7 is identical with the length of main chill roll 4, and the gap of air knife 7 is l -2mm.

Originally new beneficial effect is：The film of production has the advantages that film clarity is good, and thickness evenness is good.

Brief description of the drawings

Fig. 1 is the structural representation of this new production line.

Embodiment

It is new to this below in conjunction with the accompanying drawings to enable this new above-mentioned purpose, feature and advantage more obvious understandable Embodiment be described in detail, this new above and other purpose, feature and advantage will be become apparent from.Complete Identical reference instruction identical part in portion's accompanying drawing.Not deliberately accompanying drawing drawn to scale, it is preferred that emphasis is show that this is new The purport of type.

As shown in figure 1, during this is new, extruder 1 extrudes the plastics of molten state, the discharging opening connecting T-shaped mouth mold of extruder 2, in the presence of T-shaped mouth mold 2, the material extruded from extruder 1 is extended, the opening shape for the T-shaped mouth mold 2 that plastic melt flows through Shape is a slit, and melt forms the non-individual body in a rectangular section by slit, and the width in its section is much larger than thickness. Fused films are cast to downwards by head by cooling roller surface, after cooling and shaping, through traction, trimming and batches, individual layer is made Cast film.Main chill roll 4 and from the chrome-faced of chill roll 5, main chill roll 4 and is passed through coolant inside chill roll 5, leads to Supercooling liquid cools down, from the non-individual body of T-shaped mouth mold 2 outflow, the crack fallen between hold-down roller 3 and main chill roll 4, and non-individual body quilt Cooling, main chill roll 4 and the surface unusual light from chill roll 5 so that the roughness of manufactured film surface is also very low.It Rear film will adjust tension force by the roller of one group of S-shaped distribution, film by jockey pulley 6, and the size of film depends primarily on Rate of extrusion and hauling speed.Air knife 7, β calibrators 8 and wrap-up 9 are provided with after jockey pulley 6.

Extruder 1 selects single screw extrusion machine.When raw material is polypropylene, from 90-200mm of screw diameter, screw-rod structure For the metering type screw with mixing refining head.The T-shaped breadth of mouth mold 2 has 2.4m.Mouth mold straight portion length is 50-80 times, die lip gap For 0.3-0.5mm.Use branch pipe type head, branch 30-50mm of pipe diameter, 0.3-1.0mm of die lip gap more.From head extrusion Melt scratched cooling roller surface, be quickly cooled to film.Meanwhile chill roll also has draw.Cool down roller diameter For 400-1000mm.Roller surface hard chrome plating, is polished to minute surface.It is double-screw type cooling tube in roller, leads to cooling water cooling. Air knife 7 is the Narrow slit nozzle of blowing compressed air, is the loading amount for coordinating chill roll to carry out cooling and shaping to film.The width of air knife 7 Identical with the length of chill roll, knife lip surface Guang Gu, the accuracy of manufacture is high, and the gap of air knife is l -2mm.β calibrators 8 are transversely Measurement film thickness is moved back and forth, and in fluorescence screen display.The data of measurement gained can be automatically fed at computer Reason, can adjust automatically process conditions after processing.

It is new in order to fully understand to elaborate many details in the above description.But above description is only This new preferred embodiment, this it is new can be much different from other manner described here to implement, therefore this It is new not limited by specific implementation disclosed above.Any those skilled in the art are not departing from this new technique simultaneously In the case of aspects, all this new technique scheme is made using the methods and technical content of the disclosure above many possible Changes and modifications, or it is revised as the equivalent embodiment of equivalent variations.Every content without departing from this new technique scheme, according to this New technical spirit still falls within this new skill to any simple modifications, equivalents, and modifications made for any of the above embodiments In the range of the protection of art scheme.

Claims

A kind of 1. film line, it is characterised in that the discharging opening connecting T-shaped mouth mold (2) of extruder (1), T-shaped mouth mold (2) Opening shape is a slit, the crack between the slit face hold-down roller (3) and main chill roll (4), main chill roll (4) and from Chill roll (5) chrome-faced, main chill roll (4) and is passed through coolant inside the chill roll (5), and one is set afterwards from chill roll (5) The jockey pulley (6) of the S-shaped distribution of group, air knife (7), β calibrators (8) and wrap-up have been set gradually after jockey pulley (6) (9)；Extruder (1) is single screw extrusion machine, and 90-200mm of screw diameter, screw rod is the metering type screw with mixing refining head；It is T-shaped Mouth mold (2) breadth 2.4m, die lip gap are 0.3-0.5mm.
2. production line according to claim 1, it is characterised in that the length phase of the width of air knife (7) and main chill roll (4) Together, the gap of air knife (7) is l -2mm.