CN104527100A - A manufacturing process of an ultrathin wide film from reclaimed filled polytetrafluoroethylene - Google Patents

Abstract

The invention belongs to the technical field of film tools, and particularly relates to a manufacturing process of an ultrathin wide film from reclaimed filled polytetrafluoroethylene. The process includes steps of: 1) separating and classifying the reclaimed filled leftover materials according to color differences and varieties, 2) cleaning, 3) grinding into powder, 4) drying, 5) sieving, 6) mixing the materials, 7) prepressing to prepare a blank, 8) molding and sintering at a high temperature, 9) turning and 10) rolling. The process improves overall stability performance so that the manufactured ultrathin wide film has better stability performance, and achieves ultrathin and wide objectives.

Description

The polytetrafluoroethylene (PTFE) ultra-thin breadth film making process that regeneration is filled

Technical field

The invention belongs to film apparatus technical field, particularly relate to a kind of polytetrafluoroethylene (PTFE) ultra-thin breadth film making process regenerating filling.

Background technology

The film of current making is because the defect of its manufacture craft makes the film of ultra-thin breadth be difficult to make in the process made, and the film of the ultra-thin breadth of particularly thickness 0.03mm-3mm, width 1200 ㎜-1500 ㎜, is commercially difficult to see at present.Its reason is, Processes and apparatus does not reach requirement, makes its making have very large difficulty, can meet the requirements of even if having, higher for raw-material requirement, thus the cost made is remained high, thus making the price of finished product higher, marketing is unfavorable.

Summary of the invention

The object of the invention is to solve above-described technical problem, there is provided the lower finished product price that makes of a kind of prices of raw and semifnished materials comparatively economical, thickness 0.03mm-3mm can be made, the polytetrafluoroethylene (PTFE) ultra-thin breadth film making process of the regeneration filling of the film of the ultra-thin breadth of width 1200 ㎜-1500 ㎜, its technical scheme is as follows:

The polytetrafluoroethylene (PTFE) ultra-thin breadth film making process that regeneration is filled, described step is as follows:

1) difference of the filling leftover pieces reclaimed by color aberration and filling leftover pieces kind is separately sorted out;

2) clean: the raw material of classify is steeped more than 4 hours in container, according to quantity and thickness selection machine and hand washing removal surface dirt, finally steep clearly more than 4 hours with pure water, pull out and put into cleaning bag and frame;

3) abrasive dust:

A, raw material pulverize by clean after material self-control high speed disintegrator be ground into 8-10 about ㎜ particle;

B, wear into 150 ~ 300 order powder with self-control flour mill again;

4) dry: instrument adopts electronic digital display thermometer, and mode of heating takes electron tube, powder is put in stove and carry out taking out for oven dry 150-160 DEG C 19-20 hour;

5) sieve: about adopting complete machine stainless steel and screen cloth 150 order, full-automatic sieving machine;

6) batch mixing: according to the requirement of the different inserts ratio of client, add the pure material of suitable polytetrafluoroethylene (PTFE) or inserts in right amount;

7) precompressed base: complete in workshop after being wiped clean by cleaning mold, to add after compound the then compressing green compact when product surface pressure 28-30MPA;

8) high-temperature molding sintering: blank adopts computer multistage sintering procedure to sinter after entering stove, adopt intensification 5 DEG C/1 hour, sintering temperature high temperature is 365 DEG C-385 DEG C, sintering time decides according to wall thickness, sinter rear cooling, be down to 150 DEG C-200 DEG C, goods have been taken out;

9) turning: blank is put into stove preheating 60 DEG C-120 DEG C, turning speed 10-35 turns/the speed turning of min;

10) roll: stack diameter 220*1800, chrome-faced surface requirements below Ra0.15 again, temperature controls at 200 DEG C about-320 DEG C; When stack rotates, general control is at the constant speed degree 15-50 rev/min with thickness.

The polytetrafluoroethylene (PTFE) ultra-thin breadth film making process that regeneration provided by the invention is filled, when in use, have employed the polytetrafluoroethylene (PTFE) that regeneration is filled, thus raw-material price is significantly reduced, thus the price of finished product can be reduced, be conducive to the popularization in market.Well make the characteristic of the polytetrafluoroethylene (PTFE) of each regeneration filling organically merge in the organic cooperation by each step, improve overall stability thus make the ultra-thin breadth film made have better stability, the object of ultra-thin breadth can be reached.

Detailed description of the invention

Illustrate embodiment below:

Embodiment 1:

The polytetrafluoroethylene (PTFE) ultra-thin breadth film making process that regeneration is filled, described step is as follows:

1) difference of the filling leftover pieces reclaimed by color aberration and filling leftover pieces kind is separately sorted out;

2) clean: the raw material of classify is steeped more than 4 hours in container, according to quantity and thickness selection machine and hand washing removal surface dirt, finally steep clearly more than 4 hours with pure water, pull out and put into cleaning bag and frame;

3) abrasive dust:

A, raw material pulverize by clean after material self-control high speed disintegrator be ground into about 8 ㎜ particle;

B, wear into 150 order powder with self-control flour mill again;

4) dry: instrument adopts electronic digital display thermometer, and mode of heating takes electron tube, powder is put in stove and carry out oven dry 150 DEG C of taking-ups in 19 hours;

5) sieve: about adopting complete machine stainless steel and screen cloth 150 order, full-automatic sieving machine;

6) batch mixing: according to the requirement of the different inserts ratio of client, add the pure material of suitable polytetrafluoroethylene (PTFE) or inserts in right amount;

7) precompressed base: complete in workshop after being wiped clean by cleaning mold, to add after compound the then compressing green compact when product surface pressure 28MPA;

8) high-temperature molding sintering: blank adopts computer multistage sintering procedure to sinter after entering stove, adopt intensification 5 DEG C/1 hour, sintering temperature high temperature is 365 DEG C DEG C, and sintering time decides according to wall thickness, has sintered rear cooling, has been down to 150 DEG C DEG C, is taken out by goods;

9) turning: blank is put into stove preheating 60 DEG C DEG C, the speed turning of turning speed 10 turns/min;

10) roll: stack diameter 220*1800, chrome-faced surface requirements below Ra0.15 again, temperature controls at about 200 DEG C DEG C; When stack rotates, general control is at the constant speed degree 15 revs/min with thickness.

Embodiment 2:

The polytetrafluoroethylene (PTFE) ultra-thin breadth film making process that regeneration is filled, described step is as follows:

1) difference of the filling leftover pieces reclaimed by color aberration and filling leftover pieces kind is separately sorted out;

2) clean: the raw material of classify is steeped more than 4 hours in container, according to quantity and thickness selection machine and hand washing removal surface dirt, finally steep clearly more than 4 hours with pure water, pull out and put into cleaning bag and frame;

3) abrasive dust:

A, raw material pulverize by clean after material self-control high speed disintegrator be ground into about 10 ㎜ particle;

B, wear into 300 order powder with self-control flour mill again;

4) dry: instrument adopts electronic digital display thermometer, and mode of heating takes electron tube, powder is put in stove and carry out oven dry 160 DEG C of taking-ups in 20 hours;

5) sieve: about adopting complete machine stainless steel and screen cloth 150 order, full-automatic sieving machine;

6) batch mixing: according to the requirement of the different inserts ratio of client, add the pure material of suitable polytetrafluoroethylene (PTFE) or inserts in right amount;

7) precompressed base: complete in workshop after being wiped clean by cleaning mold, to add after compound the then compressing green compact when product surface pressure 30MPA;

8) high-temperature molding sintering: blank adopts computer multistage sintering procedure to sinter after entering stove, adopt intensification 5 DEG C/1 hour, sintering temperature high temperature is 385 DEG C, and sintering time decides according to wall thickness, has sintered rear cooling, is down to 200 DEG C, is taken out by goods;

9) turning: blank is put into stove preheating 120 DEG C, the speed turning of turning speed 35 turns/min;

10) roll: stack diameter 220*1800, chrome-faced surface requirements below Ra0.15 again, temperature controls at about 320 DEG C; When stack rotates, general control is at the constant speed degree 50 revs/min with thickness.

Claims (1)

1. the polytetrafluoroethylene (PTFE) ultra-thin breadth film making process of regeneration filling, it is characterized in that, described step is as follows:

1) difference of the filling leftover pieces reclaimed by color aberration and filling leftover pieces kind is separately sorted out;

2) clean: the raw material of classify is steeped more than 4 hours in container, according to quantity and thickness selection machine and hand washing removal surface dirt, finally steep clearly more than 4 hours with pure water, pull out and put into cleaning bag and frame;

3) abrasive dust:

A, raw material pulverize by clean after material self-control high speed disintegrator be ground into 8-10 about ㎜ particle;

B, wear into 150 ~ 300 order powder with self-control flour mill again;

4) dry: instrument adopts electronic digital display thermometer, and mode of heating takes electron tube, powder is put in stove and carry out taking out for oven dry 150-160 DEG C 19-20 hour;

5) sieve: about adopting complete machine stainless steel and screen cloth 150 order, full-automatic sieving machine;

6) batch mixing: according to the requirement of the different inserts ratio of client, add the pure material of suitable polytetrafluoroethylene (PTFE) or inserts in right amount;

7) precompressed base: complete in workshop after being wiped clean by cleaning mold, to add after compound the then compressing green compact when product surface pressure 28-30MPA;

8) high-temperature molding sintering: blank adopts computer multistage sintering procedure to sinter after entering stove, adopt intensification 5 DEG C/1 hour, sintering temperature high temperature is 365 DEG C-385 DEG C, sintering time decides according to wall thickness, sinter rear cooling, be down to 150 DEG C-200 DEG C, goods have been taken out;

9) turning: blank is put into stove preheating 60 DEG C-120 DEG C, turning speed 10-35 turns/the speed turning of min;

10) roll: stack diameter 220*1800, chrome-faced surface requirements below Ra0.15 again, temperature controls at 200 DEG C about-320 DEG C; When stack rotates, general control is at the constant speed degree 15-50 rev/min with thickness.