CN1428651A - Film cassette - Google Patents

Abstract

A film cassette with shading cloth. The shading cloth is executed by teasel process by thick teaseler and then by thin teaseler. The teaseler includes teasel rollers which includes hair roller and reverse roller. The rotation speed of the thin teaseler hair roller is quicker than the rotation speed of the thick teaseler hair roller, and the rotation speed of the thick teaseler reverse roller is quicker than the rotation speed of the thin teaseler reverse roller. The teasel process is executed to make the thickness of the cloth obtained by the thin teaseler less than the thickness of the cloth obtained by the thick teaseler. The cloth is then teaseled by the thin teaseler to make the thickness larger than the thickness of the cloth obtained by the thick teaseler.

Description

Optical film magazine

Technical field

The present invention relates to a kind of photosensitive material shading container, this container comprises a kind of gobo (being also referred to as " teremp "), for shading with the up and down inner wall surface of this cloth attached to seam shape opening, seam shape opening is the place that photosensitive material passes through, this seam shape opening is formed on the box body of optical film magazine, and optical film magazine is one and is used to preserve autotype paper or xeroxs spool box with photosensitive material etc.

Background technology

Optical film magazine comprise bobbin as minimum component part, cassette shell, a pair of attached to the relative two sides of shell the magazine cover and be wrapped in film on the bobbin, and has a kind of like this structure, wherein film is unexposed before use, the integral body of film or main body are wrapped on the interior bobbin of cassette shell, in camera, film is pulled out from cassette shell and exposure-imaging, be involved in the cassette shell again.

JP-A-7-152114 discloses a kind of gobo nylon loop, that be used for optical film magazine that uses in (JP-A represents that the patented claim of Japanese unexamined is open).Wherein disclose and will carry out twice, preferred three two-stage nappings are handled.In this publication, the height of fine hair is regulated by shearing, although can have the problem that is easy to generate fiber waste-material by shearing the height of regulating fine hair.

JP-A-2000-206649 discloses with soaking in water after the napping and has removed fiber waste-material, thereby reduces the method for fiber waste-material.But, even in water, soaking the also very difficult fiber waste-material of thoroughly removing after the shearing.Therefore need a kind ofly need not to shear and accurately control the method for height of naps.

Summary of the invention

Summary of the invention

An object of the present invention is to provide a kind of optical film magazine, this optical film magazine comprises a kind of napping gobo, this cloth is made up of cheap warp and weft, can suppress the generation of fiber waste-material in the napping process, can be easily with THICKNESS CONTROL on desired value, and light-proofness and film to pull out performance all good.

The present inventor to cheap fleece in the best rotational speed of phase napping and thin napping, carry out having carried out intensive research aspect the best number of times of napping, with the moment of torsion of pulling out of the light-proofness that reaches magazine and film, and finally finished the present invention.

Above-mentioned target obtains in the following way.

Promptly, achieve the goal by a kind of optical film magazine, this optical film magazine contains gobo, gobo is attached to the optical film magazine outlet seam place that pulls out film institute warp, this gobo is a kind of cloth through napping, the napping step comprises with thick teaser napping, use thin teaser napping again, contain the napping roller in the teaser, it comprises the reverse roller of the reverse direction rotation of advancing along the pile roller of cloth working direction rotation with along cloth, the rotational speed of thin teaser pile roller is faster than the rotational speed of thick teaser pile roller, and the rotational speed of the thick reverse roller of teaser is faster than the rotational speed of the reverse roller of thin teaser, the cloth thickness that carries out napping so that the thickness of thin teaser napping gained cloth less than the cloth thickness with thick teaser napping gained, carries out napping with thin teaser again is greater than the thickness with thick teaser napping gained cloth.

Description of drawings

Figure 1A and 1B are the sketches that is used to make the teaser of gobo in one embodiment of the invention.

Fig. 2 is the fleece cross-sectional view strength in one embodiment of the invention.

Fig. 3 is the cross-sectional view strength of an example of representative optical film magazine.

Fig. 4 is the cross-sectional view strength of amplification of an example of the used gobo of the present invention.

Fig. 5 is the sketch that shows the braiding structure (5 satins) of the fleece in one embodiment of the invention.Detailed Description Of The Invention

Fig. 3 has showed the cross-sectional view strength of an optical film magazine example of the present invention, and Fig. 4 has shown a cross-sectional view strength that is used for gobo (the being also referred to as teremp) example of this magazine.

The film cover of optical film magazine forms by becoming tube portion 11 to bend to tubulose, and makes attached to becoming the gobo 20 on the bore portion 14 to be in contact with one another.When the film 13 on being wrapped in bobbin 12 was drawn out, two surface all contacted with the gobo 20 that becomes bore portion 14, thereby the film 13 in the magazine is lucifuges.

With reference to Fig. 4, teremp 20 comprises long one section cloth (being called cloth later on) 32, cloth 32 is handled the fine hair 31 that forms through napping, be used for teremp 20 is sticked to bonding agent 34 on the optical film magazine slit, and prevent the internal coating (later on be called sealant) 33 of adhesive permeation in the cloth.The thickness of teremp 20 is preferably 0.5～2.5mm, more preferably 1.2～2.0mm.The thickness of fine hair 31 (representing with D4 among Fig. 4) is preferably 0.1～1.7mm with regard to the anticol sheet is pulled out.And the height of the fine hair 31 of the teremp that the present invention is used can be regulated at an easy rate, and need not shear after napping is handled.

Cloth 32 can be that looped fabric also can be woven cloth.When using looped fabric, preferred warp thread is the long filament line, weft yarn be preferably bifilar or three strands spin or silk thread preferred especially bifilar spinning.Preferred woven cloth is 3～5 drillettes or 1/3 or 1/4 twill, preferred especially 4 or 5 drillettes.Fig. 2 has shown the schematic cross-sectional view of a fleece example, and Fig. 5 has showed the sketch plan of the example of 5 drillette weaving structures.Among Fig. 5,1 expression weft yarn, 2 expression warp thread, a represents the direction that light enters.

Preferred fine hair 31 and cloth 32 have light-proofness and low electrostatic charge.In order to improve light-proofness, preferred cloth is painted, and color and colorize method have no particular limits.Especially, black absorption light in extensive range, and can effectively strengthen light-proofness.Colorize method can comprise dyes cloth, and perhaps painted fiber is woven or knitted into cloth.And, when film is pulled out from optical film magazine, the fine hair friction of film and teremp, teremp may static electrification.Therefore preferred used cloth contains conductive material or antistatic agent, perhaps coats antistatic agent in its surface.Examples of conductive materials comprises carbon black.Because carbon black is a black, consider it is favourable from the shading aspect.

Material to sealant 33 has no particular limits, but preferred the use and cloth 32 and all compatible material of bonding agent 34.Its general example comprises natural rubber, casein, polyvinyl alcohol (PVA) and derivant thereof, polyacrylamide, vinyl methyl ether-copolymer-maleic anhydride, and phenol resin.Bonding agent 34 can be that contact adhesive also can be hot melt (temperature-sensitive) bonding agent, and its composition is had no particular limits.The example of contact adhesive comprises rubber adhesive, acryloid cement and vinyl methyl ether-copolymer-maleic anhydride, and the example of hotmelt comprises ethylene-vinyl acetate copolymer and polyamide.Can also use sealed binder, this bonding agent plays sealant and bonding agent effect, thereby can save sealant 33.

Teremp of the present invention can be used for example following method manufacturing.Napping processing as described below is carried out in the braiding of long section or the one side of looped fabric.Coat sealant with respect to the another side that plays matte, and dry, and coated with adhesive is also dry then.The long section fleece of such gained is cut into required size.

After the dyeing of long section cloth again under the situation of napping,, preferably long section cloth is heat-treated (being also referred to as pre-heat setting later on) before dyeing in order to suppress the contraction on Width when the dyeing of long section cloth.Pre-heat setting is undertaken by for example blowing 180 ℃ of hot-airs.Preferably fixed width in thermal treatment (blowing hot gas) process opens up 1%～5% and its width is protracted than thermal treatment.

Carry out napping by standard method and handle, that is, by make the long section cloth that is transmitted contact with the teaser roller (friction) carry out napping and handle, this roller has brad type protrusion, and rotates against the direction of long section cloth transmission.Preferred napping is handled and is comprised thick napping processing, is that thin napping is handled subsequently.Thick napping is herein handled to refer to from cloth and is pulled out long thick line (low cashmere density), thin napping is handled and is referred to meticulously raise a nap on cloth (high cashmere density), and can control as the transfer rate of long section cloth, the rotational speed of roller, the height of brad type protrusion and the contact moment of torsion between quantity and long section cloth and the napping roller by Change Example.In order to strengthen the napping effect, can also on the contrary direction of carrying out the napping processing, carry out napping once more and handle long section cloth.The number of times that napping is handled has no particular limits, but re-treatment can increase the quantity of face fibre, and increases the cashmere density of face fibre, thereby strengthens the napping effect.

The present invention adopts a kind of like this gobo, and this gobo to increase the thickness of cloth, makes its surface meticulousr and soft through thin napping through thick napping again.When carrying out two step nappings in this way and handle, at first handle the thickness that makes thick fleece and reduce by thin napping, form fine hair shape surface.When measuring the thickness of the fluffy cloth of thin napping, even owing to also can make the cloth compression with slight pressure, measured one-tenth-value thickness 1/10 can reduce.Subsequently, carry out thin napping once more and handle, so that the thickness of cloth is bigger than the original thickness after handling through thick napping.Repeat thin napping processing and can obtain more fluffy structure, the measured value of cloth thickness also increases.The bulkiness that this mode napping is produced can be improved the shading performance of the gobo that is used for optical film magazine.And, because producing bulkiness, napping progressively carries out, the thickness of cloth progressively increases, and can control the thickness of cloth accurately, therefore needn't shear.

Figure 1A and 1B are the sketches of the used teaser example of the present invention.

Being used for teaser of the present invention has two kinds of napping rollers that sense of rotation is opposite, that is, and and along the pile roller P of cloth working direction rotation and the reverse roller C that rotates against the cloth working direction.When after thick napping is handled, carrying out thin napping and handle, speed when the rotational speed of pile roller P is higher than thick napping and handles in the teaser when carrying out thin napping and handling, and the speed of the rotational speed of thick napping reverse roller C of teaser when handling when handling faster than thin napping.

In the single-stage teaser A that is preferred for thick napping processing, tooth pitch between the opposite teaser roller of sense of rotation be provided with broad, fabric contacts with the teaser roller compact, and above being wrapped in, cause from fabric the strength of outwards backguy to become big, thereby form big and the thick coil form fine hair that width reduces of thickness.This is very important in step (thin napping is handled) subsequently.Can also adopt two-stage or multistage teaser to carry out thick napping handles.

In the two-stage teaser B that is preferred for thin napping processing, by narrower tooth pitch is set, make the thick pile further meticulous napping in surface between the opposite teaser roller of sense of rotation, produce flexibility.This step has saved final thickness.Because little when the reduction of each width is handled than thick napping, preferably adopt thick napping to handle its width is fully dwindled.Also can in handling, thin napping adopt two-stage or multistage teaser.

Among Fig. 1, as a kind of embodiment, single-stage teaser A has 36 teaser rollers, comprising 18 reverse roller C and 18 pile roller P, the head pulley of two-stage teaser B has 24 teaser rollers, comprise 12 reverse roller C and 12 pile roller P, tail-pulley has 24 teaser rollers, comprises 12 reverse roller C and 12 pile roller P.

The following describes preferred gobo material.

Warp thread is the processing line made from the single step heating, and preferably its thickness was 75～140 dawn, 36～48 long filaments.Preferred warp thread is with the speed braiding of 150～250 times/m (gas twines), in case the wearing and tearing of principal vertical line.When the sth. made by twisting a few hours of weft yarn, napping process center line will scatter, the therefore preferred powerful twisting of speed of using 250～350 sth. made by twisting/m.

Pull out moment of torsion and shading performance in order to reach the performance of product, particularly film, preferred warp count is 120～150 line/inches, and weft count is 60～90 line/inches.Preferred weft yarn is spinning of 1.0～1.4 dawn (based on ultimate fibre of equal value).

Consider nappiness, the length that spins is preferably 38～50mm.If too short, line will scatter during napping.If long, then can damage nappiness.

Describe below napping handle in the preferred embodiment of torque conditions control/regulated value and width, thickness and warp count operational control value.

First and second nappings are handled and are adopted high napping moment of torsion single-stage teaser, the 3rd～6th napping to handle the relatively low two-stage teaser (two napping drums are arranged) of employing napping moment of torsion.Required napping number of processes is twice thick napping (if carry out three times or more, the line of napping can come off), can also carry out thick napping once with the two-stage teaser.In thin napping because the weft yarn bundle of handling pull-up through thick napping by fiberization regulating thickness to desired value, preferably adopt low napping moment of torsion also to carry out repeatedly napping to handle, and it is better to adopt the two-stage teaser to carry out four napping treatment effects.Can also carry out 8 nappings with the single-stage teaser,, perhaps use 8 grades of teaser nappings 1 time with level Four teaser napping 2 times.

Preferred gobo of the present invention comprises a kind of like this cloth, and this cloth is immersed in the napping oil that contains ester group wax and normal paraffin, and is dry then, carries out napping with the teaser that the napping roller is arranged again and handles.The following describes and be preferred for napping oil of the present invention.

In order to make the gobo that is used for magazine of the present invention, ester group wax and normal paraffin are used in combination.

As for ester group wax, can preferably use fatty acid esters of sorbitan.Fatty acid esters of sorbitan is dehydration polycondensations under about 190 ℃ by sorbierite and fatty acid, further obtains at 230～250 ℃ of these Spans of heating.In this case, also exist accessory substance to take off two water Spans.

Fatty acid esters of sorbitan also can be commercially available, as the SPAN type of Atlas (US) production, and Kao Corporation, Sanyo Chemical Industries, the product that Ltd. makes etc.

The instantiation of fatty acid esters of sorbitan comprises a lauric acid Isosorbide Dinitrate, the monooleate Isosorbide Dinitrate, one palmitic acid Isosorbide Dinitrate, the monostearate Isosorbide Dinitrate, sesquialter oleic acid Isosorbide Dinitrate, three oleic acid Isosorbide Dinitrates, distearyl acid Isosorbide Dinitrate, and three stearic acid Isosorbide Dinitrates.

The characteristic that is preferred for wax of the present invention is described below.

Natural wax roughly is divided into plant source, animal sources and mineral sources.Synthetic wax roughly is divided into the synthetic wax that coal is derived, the polyvinyl wax of petroleum derivation, the synthetic wax (ester group, amide group and glycerine ester group) of and fat-and oily-derive.In addition, pertroleum wax roughly is divided into paraffin (normal chain), microcrystalline wax (side chain, normal temperature is solid-state) and petrolatum wax (side chain, normal temperature are semisolid down).

In the wax of many kinds, the inventor has selected to belong to the normal paraffin of petroleum derived wax, and find that synthetic wax with this paraffin and ester group fat-and oil-derive uses together the napping processing is carried out effectively, particularly, reduce the friction factor between the fiber simultaneously to polyester textile.

As for normal paraffin, available Nippon Seiro Co., the commercial product that Ltd. makes is as the paraffin kind.For example, on average to contain 23～33 carbon atoms and fusing point be 50～60 ℃ paraffin in preferred use.

The ratio of ester group wax and normal paraffin is preferably 1.5: 1～and 2.5: 1, more preferably from about 2: 1.

Above-mentioned napping oil preferably uses with the emulsion form, and this emulsion forms with non-ionic surfactant and anionic surfactant.

As for non-ionic surfactant, preferred polyoxyethylene alkyl ether.

As for anionic surfactant, preferably contain the alkane sulfonate of 12～15 carbon atoms.

Illustrate the instantiation of non-ionic surfactant and anionic surfactant below, surfactant is not restricted to this (C ₆H ₄-expression phenylene).1:C ₁₆H ₃₃(OCH ₂CH ₂) ₁₀OH2:C ₉H ₁₉-C ₆H ₄-(OCH ₂CH ₂) ₁₂OH3: 5: three (isobutyl) sodium naphthalene sulfonates 6 of 4: three (isopropyl) sodium naphthalene sulfonates of neopelex: 7: two (2-ethylhexyl) alpha-sulfo sodium succinates of lauryl sodium sulfate 8:C ₈H ₁₇-C ₆H ₄-(CH ₂CH ₂O) ₃(CH ₂) ₂SO ₃K

The ratio of preferred nonionic surfactants and anionic surfactant is 1.5: 1～1: 1.5, more preferably from about 1: 1.

Surfactant with respect to the ratio of napping oil by weight, for per 100 parts of napping oil have 30～50 parts of surfactants, more preferably from about 40 parts (weight).

The preferred embodiment of napping oil applying step now is described.

Preferably carry out applying step like this: use heat to expand the cloth machine down at 100 ℃～150 ℃, cloth speed is 10～30m/min, and rolling dried load is 2～10kg/cm ², rolling dried shrinkage rates is 40%～80%.

Preferably in napping oil, soak and carry out the napping processing within back 7 days.More preferably carrying out napping within 1～6 day handles.

According to the present invention, can provide a kind of and contain light-proofness and pull out all optical film magazines of good gobo of moment of torsion.

And, a kind of gobo that is used for optical film magazine can also be provided, this gobo contains the napping light-blocking member of being made up of cheap warp thread and weft yarn, and light-blocking member can obtain target fleece thickness, keeps stable light-proofness and film simultaneously and pulls out performance.

Embodiment

Illustrate the example of preparation gobo down, but the present invention is not limited thereto.The preparation of embodiment 1～3 and comparative example 1 and 2 gobos

Used warp thread is a line of handling 75 dawn, 36 long filaments, 100% dacron silk thread gained with the single step heating, is 300 sth. made by twisting/m, and count (gas twines) is 200 times/m.

Used weft yarn is 20 bifilar spinning of 100% dacron, is equivalent to for 1.4 dawn, is screwed onto 300 sth. made by twisting/m by force.

Used loom is an air-jet loom, and its warp count is 134 line/inches, and weft count is 68 line/inches, and 5 satin braiding structures.

Used dyeing machine is the circular jet dyeing machine, and used dyestuff is that printing and dyeing density is the disperse dyes of 7%o.w.f..

Used napping oil is the potpourri that contains 10 weight % distearyls acid Isosorbide Dinitrate (ester group wax), 5 weight % normal paraffins (pertroleum wax), 3 weight % polyoxyethylene alkyl ethers (non-ionic surfactant) and 3 weight % alkane sulfonates (anionic surfactant), and the concentration of napping oil is 2.0 weight %.

The number of times that napping is handled is listed in the table 3.For example, be 6 example for the total napping number of processes in the table 3, detail is as follows.

That is, carry out twice thick napping with the teaser roller of high rotary torque and handle, make in the bifilar weft yarn one form fine hair bundle, carry out 4 thin napping processing with low relatively moment of torsion again, make the fine hair bundle fiberization.By adjusting the napping condition that 6 nappings are altogether handled, the target thickness that reaches after napping is handled is 1.55mm.Shearing step subsequently has been removed, and the fine hair that weft yarn forms keeps its bulkiness.

After the napping gobo is coated with antistatic agent and sealant, this cloth is sticked to the film exit of 135 optical film magazines with bonding agent.

As for antistatic agent, use cationic antistatic agent (Eletat AK-10 (name of product, guanidine hydrochloride type specific cation polymkeric substance), by Ipposha Oil Industries Co., Ltd. makes), concentration is 0.4 weight %.

As for sealant, use emulsion-type styrene-propene acid resin (viscosity: 1500mPas), coat with reverse knife coating.The amount of the sealant that is coated with is 45g/m ²

As for bonding agent, use emulsion-type styrene-propene acid resin (viscosity: 1300mPas), coat with rod coater.The amount of institute's coating adhesive is 75g/m ², the desired value that is coated with back gained gobo thickness is 1.6mm.

After gobo is coated with sealant, cut out the slit that width is 11.5mm and 9.5mm with ultrasonic cutting cutter.The gobo of same widths can be as the top and the bottom in film exit.Behind the joint-cutting, gobo back and forth is wrapped on the plastics spool.Subsequently, adopt the load mode that transmits a plurality of plates continuously two long section teremps to be bonded in continuously the right and left of a plurality of magazine coverboards respectively, these plates transmit with a kind of like this state, wherein the rear end of the front end of fragment and adjacent segment is close mutually, promptly, their left side mutually in line, the right also mutually in line, and used drawing method is for to be compressed in the teremp of precoating with bonding agent respectively on the plate the right and left that is transmitted.The teremp that will adhere to is like this cut from the back side of each thin plate sheet then, forms the magazine coverboard.With ISO 400 color negative filies (FUJI COLOR SUPERIA 400 (ProductName), by Fuji Photo Film Co., Ltd. make) be entangled on the bobbin, and in the magazine made from above-mentioned cassette shell plate of packing into, to such as light-proofness with pull out quality such as moment of torsion and assess.The results are shown in Table 3.

The thickness of 135 type magazines when making teremp stick to the magazine coverboard reaches 1.65mm, and satisfied restriction is arranged reaching requirement and counterpart size aspect light-proofness and the pulling out property of film simultaneously, and the thickness after the preferred napping is 1.55mm.The 1.55mm desired value that sets is considered textile finishing step, sealant and the adhesive application procedures after the napping and is related to the step that sticks on the magazine coverboard and decides.

Table 1

The napping number of processes	Napping condition: setting value		The technology controlling and process value
						Moment of torsion (head pulley) oppositely/pile (rpm)	Moment of torsion (tail-pulley) oppositely/pile (rpm)	Thickness: mm (3 average)	Width: cm	Warp count: line/inch (3 average)
	The 1st time (single-stage)	1300-1380/ 900-940	-	?1.10±0.2	?142.5± ?7.5						?108±5
The 2nd time (single-stage)						1300-1380/ 900-940	-	?1.30±0.2	?131.5± ?6.5	?117±5
	The 3rd time (two-stage)	1155/980 (fixing)	1155/980 (fixing)	?1.12-1.45	?120-135						?113-128
The 4th (two-stage)						1155/980 (fixing)	1155/980 (fixing)	?1.25-1.50	?115-130	?119-33
	The 5th (two-stage)	1120-1190/ 945-1015	1120-1190/ 945-1015	?1.49±0.08	?116±5						?132±5
The 6th time (two-stage)						1120-1190/ 920-1040	1120-1190/ 910-1050	?1.55±0.05	?111±5	?137±5

The 3rd and the technology controlling and process value handled of the 4th napping be desired value, remaining is a controlling value.

" oppositely " refers to the napping roller of the reverse direction rotation of advancing by fleece, and the value in the table is represented with rotational speed (rpm).

" pile " refers to along the napping roller of fleece working direction rotation, and the value in the table is represented with rotational speed (rpm).

Table 2

Control item	Controlling value	Measuring method
			Width	114±4cm	Measure
Warp count	134 ± 5 line/inches	Lunometer (densitometer)
			Thickness	1.55 ± 0.05mm (3 mean deviations on the Width) 1.55 ± 0.15mm (1 point measurement value deviation)	Model G Φ 30 PEACOCK indicating gauges

Table 3

		Comparative example 1	Embodiment 1	Embodiment 2	Embodiment 3	Comparative example 2
							Variation in thickness situation when thick napping is handled	Single-stage the 1st time	+0.20	+0.20	+0.20	+0.20	+0.20
Single-stage the 2nd time	-	-	+0.20	+0.20	+0.20
						Variation in thickness situation when thin napping is handled		Two-stage the 1st time	-0.15	-0.15	-0.15	-0.15	-
Two-stage the 2nd time	-	+0.18	+0.18	+0.18	-
							Two-stage the 3rd time	-	-	-	+0.15	-
Two-stage the 4th	-	-	-	+0.10	-
							The thickness of cloth (mm)	Before the napping	1.50	1.32	1.12	0.87	1.15
After the napping	1.55	1.55	1.55	1.55	1.55
						The light-proofness of magazine		B	A	A	A	C
Film is pulled out moment of torsion		C	B	A	A								A

Appraisal procedure thickness

Use Ozaki Mfg.Co., the G Φ 30 PEACOCK type indicating gauges that Ltd. makes are measured.Light-proofness

At 50 ℃ of stored dry samples after 24 hours, shine from three directions with the light of 90,000 luxs, that is, respectively shone 5 minutes 15 minutes altogether from Way out and both sides.Film is developed, assess the degree of light mist formation with the following method.A: only the mist formation phenomenon is being arranged in the scope of exit 15cm.B: only the mist formation phenomenon is being arranged in the scope of exit 15cm, but the mist formation degree is only within specialized range.C: the mist formation phenomenon is being arranged beyond the 15cm of exit.Pull out moment of torsion

After 24 hours, the moment of torsion of pulling out with Instron tension test instrument measurement film carries out following assessment: A: in the specification at 50 ℃ of stored dry samples.B: just in specification.C: exceed specification.

Result in the table 3 proof when the napping number of processes after a little while because fine hair thickness does not increase, film is pulled out resistance to be increased, and when not carrying out thin napping processing, the light-proofness variation of magazine.

Embodiment 4～7

With the method identical cloth is carried out napping and handle, only be to use the napping oil of listing in the table 4 with embodiment 3.Appraisal procedure nappiness A: the thickness that obtains with teaser standard napping moment of torsion is 1.45mm or bigger.B: the thickness that obtains with the napping moment of torsion in the setting range is 1.40mm or bigger.After image quality A:10 opens film (36) exposure, develops and xeroxs, there is not the marking of velvet head line.B: the marking that velvet head line is arranged on film.Light-proofness

, after adjusting 24 hours under the room temperature, shine from three directions at sample, that is, respectively shone 5 minutes 15 minutes altogether from Way out and both sides with the light of 90,000 luxs.Film development is assessed the degree of light mist formation with the following method.A: only the mist formation phenomenon is being arranged in the scope of exit 15cm.B: only the mist formation phenomenon is being arranged in the scope of exit 15cm, but the mist formation degree is only within specialized range.Pull out moment of torsion

After adjusting 24 hours under the room temperature, measure the pullout forces of film at sample with Instron tension test instrument (StrographV1-C, by Toyo Seiki Co., Ltd. makes)." Instron " is the Business Name of this test instrument of research and development, is also referred to as Strograph or Tensilon.The front end of film is clamped with chuck, pulls out film with the speed/chart speed of pulling out of 500mm/min, the peak value on the playback record paper.A: in the specification.B: exceed specification.

Table 4

Embodiment	??4	??5	??6	??7
					Fibre metal between the kind fibrid of napping oil *	Distearyl acid Isosorbide Dinitrate 10 weight % normal paraffins 5 weight %	Distearyl acid Isosorbide Dinitrate 10 weight % normal paraffins 5 weight %	Distearyl acid Isosorbide Dinitrate 5 weight % normal paraffins 2 weight %	Distearyl acid Isosorbide Dinitrate 15 weight % normal paraffins 10 weight %
Elapsed time	1 day	7 days	1 day	1 day
					Nappiness	??A	??A	??A	??A
Photograph character	??A	??A	??A	??A
					Light-proofness	??A	??B	??B	??A
Pull out moment of torsion	??A	??A	??A	??A
					* note between the fibre/fibre metal	Ester group wax/normal paraffin	With a left side	With left Cmin	With left Cmax

Claims (10)

1. optical film magazine comprises:

Gobo attached to the optical film magazine outlet seam place that pulls out film institute warp;

This gobo is the cloth through napping;

The napping step comprises with thick teaser napping, use thin teaser napping again, contain the napping roller in the teaser, it comprises the reverse roller of the reverse direction rotation of advancing along the pile roller of cloth working direction rotation with along cloth, the rotational speed of thin teaser pile roller is faster than the rotational speed of thick teaser pile roller, and the rotational speed of the thick reverse roller of teaser is faster than the rotational speed of the reverse roller of thin teaser;

Carry out napping and be for the thickness that makes thin teaser napping gained cloth less than cloth thickness with thick teaser napping gained; And

Further carry out napping with thin teaser so that cloth thickness greater than thickness with thick teaser napping gained cloth.

2. the optical film magazine of claim 1 wherein uses the processing of thick teaser to carry out twice with the single-stage teaser, perhaps carries out once with the two-stage teaser.

3. the optical film magazine of claim 2 wherein uses the processing of thin teaser to carry out twice at least with the two-stage teaser.

4. the optical film magazine of claim 1, wherein the gobo attached to the optical film magazine outlet seam place that pulls out film institute warp comprises a kind of like this cloth, it is by cloth being immersed in the napping oil that contains ester group wax and normal paraffin, dry then, carry out napping with the teaser that has the napping roller again and handle and to obtain.

5. the optical film magazine of claim 4, wherein napping oil is the emulsion that forms with non-ionic surfactant and anionic surfactant.

6. the optical film magazine of claim 5 wherein soaks in napping oil within back 7 days cloth is carried out the napping processing.

7. the optical film magazine of claim 1, wherein the thickness of napping base fabric is 0.5～2.5 millimeter.

8. the optical film magazine of claim 1, wherein base fabric is 3～5 satin woven cloth.

9. the optical film magazine of claim 4, wherein ester group wax is anhydro sorbitol fatty acid ester.

10. the optical film magazine of claim 4, the ratio of wherein used ester group wax and normal paraffin is 1.5: 1～2.5: 1.

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