DE1694405A1 - Plastic film - Google Patents

Description

DR.-ING. H. FINCKE 32 Feh! 96B DIPL-ING. H. BOHR Tß9 UL 0 5

DIPL-ING. S. STAEGER ι υ ^ H H υ ο MONKS 5

MOLLERSTR. 51

Folder 20 598 U. -K-pl.

Case ίΊΟο Pn181Ü9

Description on the patent application

the company IMPERIAL CHEMICAL INDUSTRIES LIkITED,

London, SoW »1o Great Britain!

concerning "Plaöbikfi-la"

1965 and 31 ο January 1966 - Great Britain

The invention relates to yerbeuserbe Plnoblkfilae,

According to the invention, PlantIkfilmo are ready to go. we ic; ho particles contain an »inert sole»

Very satisfied te L lende inert iSohlolfjulfefcei Bind gspulvortee Glass, Carborundum and ALumlnlumoxjd ^ The size of the TdLLehen des Qchlnifnibtelu lot preferably in such a way that d * r uaxlaal « Durometer is greater than ain orr2f5 em (0.005 ") and never smaller 2.5 mm (OjIOO ") solder, Uli bt preferred concentration of this Particle depends on the polymeric material doa pllas and from

109818/1940

its manufacturing method from

Preferably, the films of the invention are made by melt extrusion processes, as these are particularly economical processes, and then are made by rocking underneath their melting points are molecularly oriented.

Eo any filrabildondo thermoplastic Pol yaermateria 1 have been used for the Kunatatoffilme dor the invention · The invention botriift, however, especially the crystalline or icriijtalliübaren filrabildondon thermoplastic materials, since these boGondors are suitable for the division of molecular resistance-oriented materials to these kinds of high mechanical binding materials Polymers of propylon, hochdichto polymers of ethylene, polymers of 4-Methylpenton- (J), Blockmischpolymore of one or more of these PoIymoren, Folyoster, uie polyethylene terephthalate, and polyamides such as PolyhexümethyL "nadipamld _t Polyhexamethylenssbacamid or polycaprolactam. The polymers or copolymers can be used as additives , for example stabilizers, pigments and the like. The preferred polymers are those of polypropylene and polyalkylene terephthalate because of their accessibility and the good quality of the oriented films that can be formed from them.

DLo polypropylene and polyethylene torophthalate films for use in the present invention can be made by stretching in oinor direction dea liKtrudLeronu (dor faanchinenrichUung) odor dor HLchbung in rouhtoc angle to the extruder direction (the

1098 15/1940 bad original

Transverse direction). Alternatively, the film can be sequentially in any order in the machine and cross directions be stretched, and a third tail in the first rocked direction can be used if necessary. Another alternative is to use the PiIm as a To extrude hose, then at the same time in known Woino can be biaxially stretched. Another stretch either in the machine or transverse direction can then be applied to the biaxially stretched file »·

It: trap of polypropylene -jordan dio particles dos inert Sciilüif materials preferably mixed with it by Sch-aelzraischen, and the ocvarzugton Uengon an inert mixed with it Loop cerial are 1 to 15 gon%.

In the case of polyethylene terephthalate, the inert abrasive media can for example by Trcmmelmisctin with Polyluerachnczeln before introducing the latter j j the extruder hopper mixed, or they can be melted Polymer added - also the working method of the master batch (master batch) can be used conveniently. In the case of Polyäthylonterephthala *; the inert shell particles can in cUe polyester-forming reaction components or a low-molecular-weight product made from it, which subsequently to form a polymer with a higher molecular weight polymerized in the presence of the inert Schloifmittolteilchen is, introduced, v; orcien · The polyester can through the polycondensation manufactured by biö - ffi-Hyüro :: yäthyl) 'torephthalate

109815 / 19A0 badoriqinal

which can be generated according to any known mathode. If an ether exchange or esterification with ethylene glycol is involved, the inert abrasive particles can conveniently be incorporated into the mixture in the form of a dispersion in ethylene glycol. The internal abrasive particles can, if desired, also be dispersed in molten amine (β-hydroxyethyl) carbonate. The preferred amounts of inert abrasive for use with this polymer are 1 to 15 weight percent, more preferably 5 to 10 percent.

Jn rJoj. «Patent specification (Pöüentaammeldung of gloiohön

Anr-jlder.in from. güoiclien day iu: V ^! j your 'Uèitel ^{"Mohraciiicliteniaater::.} Äl ^l, ir-u-ornos Alztnj sign wallet 20556, Case lio P. 18124) .lud Mehrschi.chteninaterialien UIID ^ O ^ go to derea Herctcllung bcnchriobone Preferably, the present invention ao carried out that the films of the invention appear as an outer edge or as the outer layers of a laminate of the invention mentioned.

The films or laminated films of the present invention can be used as abrasive materials, i.e., in applications similar to those used for søhmirgol paper or sandpaper, e.g. for shaping wood or metal, and as friction surfaces

The following Beinj.ioio explain the invention without it restrict. AlIo parts unc 'Proaoatan ^ abon aind on weight based.

109815/1940 _PA DORiQINAL

A dispersilon of powdered glass in ethylene glycol was made made in the following way: 454 g of powdered glass that through a sieve with a mesh size of 152u (100 Meah British Standards Fine) were mixed with 908 g of ethylene glycol and placed in a stoneware container containing 6 mm glass spheres with a bulk volume equal to one third of the volume of the pot. The pot was closed and threatened with 20 rpm. Haci) the milling was stopped for 24 hours and confirmed that good dispersion was produced.

100 'filet of DlKothylboruphthalat were melted and mixed with 40 parts of Ethylonglykol and converted according to the usual Escerauatauscharbeitswelse for the production of polyethylene terephthalate. At a charge temperature of 150 ° C, manganese acetate (0.05 % of the diethyl terephthula charge) and antimony brioxide (0.04 % of the methyltorephthalate charge), jewella gom-mixed with ethylene glycol, were added over melt Parts) and weighed through the funnel with a small amount of ethylene glycol. The exchange was terminated by removing about 28 parts of methanol and 10 parts of ethylene glycol as Daapf * 10 minutes before the transfer of the melt

BADORIQfNAL

109818/1940

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added. After the transfer, the melt was polycondensed under vacuum at 285 ° C., poured into a tape, cooled under water and cut into cubes. After drying, the BDlynero became FiIn? melt-extruded and the quenched file reheated to 90-110 ° C and stretched at a ratio of 3 »5: 1 in both the machine and cross directions to form 0.0125 mm (0.0005") thick film , containing 5% powdered glass. The bi-axially oriented film was thermally fixed at constant dimensions with an oinor temporal door of 210 G. ·

Eo r; urdon obtained films that resembled fine sandpaper, and aich ciuzu üignebon, to see a glabtoa surface, e.g. on wood products, eu produce «The Schloiffilm could can also be used satisfactorily in wet conditions.

Ro! Game 2

P A disporoion of glass Ballotini (small glass balls of

200 Il Duroiimoeeer) in ethylene glycol was used in Example 1 boßchrlebaiion produced quietly.

Then Polymaros was never produced in the same way in Example 1, except that the Ballotini glass was dispersed in ethylene glycol instead of the one used in Example 1. The polymer obtained was then as in

BAD ORIGINAL 109815/1940 ^

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109815/1940

BATH ORIGINAL

Claims (1)

Patent claims: M.) Plastic film, characterized in that the film Particle contains an inert abrasive. 2 ₀ ) plastic film according to claim 1, characterized in that the inert abrasive contains powdered glass. 5 =) plastic film according to claim 1, characterized in that that the inorte abrasive contained carborundum 4o) plastic film according to claim 1, characterized in that that the inert abrasive contains aluminum oxide ", 5o) plastic film according to one of the preceding claims, characterized in that the diameter of the particles of the abrasive is in the range 0.125 mm to 2.5 mm (0.005 "to 0.100"), 6.) Plastic film according to one of the preceding claims, characterized in that the film is oriented by hedges in a direction in the plane of the film; is. 7o) plastic film according to one of claims 1-5 »thereby characterized in that the plastic film is either biaxial BATH 109815/1940 oriented by simultaneously rocking in two directions at right angles in the plane of the film or by successively stretching the film in two directions in the plane of the film at right angles to each other IS ic 8.) Kuastotoff-FUa according to one of the preceding claims « characterized in that the inarte abrasive in one läei is present an amount ν> n 1 to 15 wt .-% the Kunatstjoff-Meteriaia ' UMNO * Din.we.aiom H) SBU / 19 ^ 0 BAD ORIGINAL