CN1240230A

CN1240230A - Protective treating method for pig skin and the part between the ribs and the hips

Info

Publication number: CN1240230A
Application number: CN 98112525
Authority: CN
Inventors: 焦兴楚
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-22
Filing date: 1998-06-22
Publication date: 2000-01-05
Anticipated expiration: 2018-06-22
Also published as: CN1063798C

Abstract

The protective treatment method for the pigskin between the ribs and the hips in pigskin tanning process is characterized by that after the pigskin is depilated and deashed, the pigskin between the ribs and the hips is coated with KMJ cross-linking agent, spread and piled for 8-20 hr so as to make the loose fibre proteins of the pigskin between the ribs and the hips be cross-linked to forme tight net-shaped structure and raise the resistance to ash alkali and enzyme. When the pigskin between the ribs and the hips is restored and softened, its liming and enzyme-treating intensity can be greatly increased, and the skin fibres are loosened enough but not produce loose surface so as to attain the goal of that the front surface of the leather is soft, but is not loose.

Description

The pigskin part between the rib and the hip is protected treatment process

The invention belongs to the pigskin leather making field, is a kind of method of the pigskin part between the rib and the hip being protected processing in pigskin leather making technology, eliminates part between the rib and the hip loose side phenomenon effectively.

Because the position difference of pigskin scleroproein braiding is big, buttocks carries out special pressure processing so always will weave closely to scleroproein in the pigskin leather making technology.As hip bag enzyme, bag ash, the mechanical treatment in the arrangement workshop section etc., these methods are poor to the position of reducing pig leather, and the pliability that improves buttocks has better action.

But the loose side phenomenon still appears in braiding relatively more loose part between the rib and the hip easily.Although because buttocks has been carried out forcing to handle, in the preparatory process before tanning, as multiple ash, part between the rib and the hip will expand equally with buttocks, and in the softening process, the part between the rib and the hip scleroproein is than the easier loss of buttocks, so, and unwanted part between the rib and the hip loose side phenomenon but happens occasionally.The technology of the blue skin of sheet particularly, because skin depth, if grey alkali, enzyme are handled light, though part between the rib and the hip is loose side not, it is coarse to occur surface easily, the hard phenomenon of buttocks plate, if strengthen grey alkali, enzyme processing, the phenomenon that the buttocks plate is hard has been lacked so, and surface is also more careful, but part between the rib and the hip loose side phenomenon is prone to very much.

Technical scheme of the present invention is that the aqueous solution brushing of the antienzyme that will have certain flexibility, alkaline-resisting material (as KMJ linking agent, formaldehyde, glutaraldehyde) is on the part between the rib and the hip grain of easy loose side, place the multiple ash of laggard drum of for some time, softening, pickling etc., the skin base of brushing is the deliming pelt.

It is the solid caustic soda (content is more than 95%) that increases 0.8-1.5% (weight percent) on the basis of common process during multiple ash that the grey alkali of strengthening, enzyme are handled, and rotation time increases 50-100%; Enzyme bating time lengthening 30-80%.Its concrete operations are as follows:

1. raw hide immersion → fleshing → degreasing → depilation (grey alkaline process) → cut edge → (split) → deliming: identical with common process.

2. skin base state before brushing: deliming pelt; PH value is 8-9.

3. bag part between the rib and the hip:

The proportioning of brushing feed liquid is in this operation:

1 part of KMJ linking agent (Hunan Shaoyang City rubber and plastic factory product)

Water 2-5 part

Thin wood chip or rice bran are an amount of

Above-mentioned materials is stirred evenly, with brown besom with the feed liquid brushing on the part between the rib and the hip grain, open and flat sign indicating number heap, the pile number does not collapse with easy handling and is as the criterion, the pile time is 8-20 hour.

Illustrate:

1. in the brushing feed liquid water yield what expand to require to suppress part between the rib and the hip, suppress the remollescent degree and decide, suppress strong a little water that a bit just add less as needs, otherwise just add a little water.

2. wood chip or rice bran what be easy to the brushing be standard.

When 3. brushing, feed liquid can only be coated in the part between the rib and the hip position of easy loose side, can not be coated onto does not need other position of being coated with, in order to avoid influence the feel at other position.

When 4. brushing, the skin base can not be creased, and wants open and flat placement during pile.

4. weigh: make following materials foundation.

5. flushing: normal temperature flowing water was washed 20-30 minute

6. multiple ash: liquor ratio, temperature are with conventional, and lime powder 6-10% (weight percent) changeed 3--4 hour, added solid caustic soda (content is more than 95%) 0.8-1.5% (weight percent), changeed 2-3 hour, stopped drum 10-15 hour.

7. flushing → deliming: routine.

8. softening: liquor ratio, temperature, materials are with conventional, and the softening time can prolong 30%-80%.

9. back operation routine is carried out.

Adopt the advantage of present method process hides: behind above-mentioned technology bag part between the rib and the hip, because the KMJ linking agent has produced the cross-linked network effect between loose scleroproein, in multiple ash process, part between the rib and the hip expands very little, even can not expand, also can see this obvious effects even if add 1.5% solid caustic soda, when softening, the ability of the anti-enzyme of part between the rib and the hip improves greatly, thereby can strengthen softening on the basis of former technology.

Handle by grey alkali, the enzyme strengthened, make that skin heart position fiber is fully loose closely, and part between the rib and the hip is because aforesaid protection is handled, grey alkali, enzyme effect that part between the rib and the hip is born are but less relatively.So just can before tanning, reach the purpose of whole the loose unanimity of hide fiber, the soft and full not loose side of finished leather, grain is careful.

The present invention is further illustrated below in conjunction with embodiment

Embodiment one:

Be used for sheet alkali skin technology:

1. raw hide is weighed → is soaked → fleshing → degreasing → depilation expansion → cut edge → split → deliming: identical with common process.

2. bag part between the rib and the hip:

1 part of KMJ linking agent

3 parts in water

Thin wood chip or rice bran an amount of (being as the criterion) to be easy to brushing

Above-mentioned materials is stirred evenly, with brown besom with the feed liquid brushing on the part between the rib and the hip grain, the open and flat sign indicating number heap of hide is stacked height and is not collapsed with easy handling and is as the criterion, the pile time is 8-20 hour.

3. weigh: make following materials foundation.

4. flushing: normal temperature flowing water was washed 20-30 minute

5. multiple ash: liquor ratio, temperature are with conventional, and lime powder 6% rotated 3 hours, added solid caustic soda (content is more than 95%) 0.8% (weight percent), rotated 2 hours, stopped drum 12 hours.

6. flushing → deliming → roll Sodium sulfate anhydrous.min(99) → cut buttocks → buttocks bag ash → deliming: with conventional.

7. softening: liquor ratio, temperature, materials soften time lengthening 30%-50% with conventional.

8. back operation routine is carried out.

Embodiment two:

Be used for the blue skin technology of sheet:

1. raw hide is weighed → is soaked → fleshing → degreasing → depilation expansion → cut edge → deliming: identical with common process.

2. bag part between the rib and the hip:

1 part of KMJ linking agent

2 parts in water

Operation is with embodiment one.

3. weigh: make following materials foundation.

4. washing: normal temperature flowing water was washed 20-30 minute

5. multiple ash: liquor ratio, temperature add lime powder 5% with conventional, change 2 hours.Add lime powder 5% again, changeed 1 hour, add solid caustic soda (content is more than 95%) 1%, rotated stall 12 hours 3 hours.

6. flushing → deliming → buttocks bag ash → deliming: same common process

7. softening: liquor ratio, temperature, materials soften time lengthening 40%-70% with conventional.

8. back operation routine is carried out.

Claims

1. a pigskin part between the rib and the hip protection treatment process is characterized in that: behind the pigskin deliming, earlier part between the rib and the hip is protected processing, be about to have the antienzyme of certain flexibility, alkaline-resisting material brushing on the part between the rib and the hip grain, open and flat pile 8-20 hour; The multiple ash of strengthening then, softening.

2. method according to claim 1 is characterized in that: have the antienzyme of certain flexibility, alkaline-resisting material can be used the KMJ linking agent.

3. method according to claim 1 is characterized in that: it is the solid caustic soda (content is more than 95%) that increases 0.8-1.5% (weight percent) on the basis of common process during multiple ash that the grey alkali of reinforcement, enzyme are handled, and rotation time increases 50%-100%; Enzyme bating time lengthening 30-80%.