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# OAR Box 1490 Prepped by Charmelle Mathews



### Document

Number: 

# 54 ) IV-C-2

7 Docket Number: 

# A-94-5 2

Printed 8/4/200811:51:47

AM Sheet 54 of 273P. 2

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### Offic

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y Planningan d Standards EmissionStandards Divisio n Mineral s and InorganicChemicals Group C504-05 Researc h Triangle Park , N C 2771 1 

# FA X COVE RSHEET A-94-5 2 IV-C-2 7



### T O Joh nBarke r COMPAN Y 

### Strongwel l OFFIC E # FAX #

### 276-645-813 4 TMO M KEITH BARNETT OBTICE * 

### (919)541-560 5 FAX # 

### (919) 541-560 0 DAT E 

### May 6 , 2002 NUMBE RO F PAGE S INCLUDIN G COVE RSHEE T 4 

### COMMENTS : Various definitions of

pre-for m injection .85/03/0 2 15:2 9 ©1919941023 4 PE S RT PN C @003/00 4 P. 3 

## 1

< 3 # 19 0 poure d int o th e mold , theyar e no t rolle d ou t o r worke d prio r t o curing . Th e composit e material s ma yo r ma yno t includ e reinforcements . Product s produce d byth e polyme r castin g proces s includ e culture d marbl e product s an d polyme r concrete . Pultrusio n mean s a continuou s proces s fo r manufacturin g composite s tha t hav e a unifor m cross-sectiona l shape . Th e proces s consist s o f pulling a fiber-reinforcing materia l throug h a resi n impregnatio n chambe r o r bat h and throug h a shapin g die , wher e th e resi n i s subsequentl ycured . Ther e ar e severa l type s o f pultrusio n equipment , suc h a s ope n bath, / p*e**&* R injection , an

d direc t di e injectio n equipment . "j( Resi n transfe r moldin g mean s a proces s fo r manufacturin g composite s whereb ycatalyze d resi n i s * transferre d o r injecte d int o a close d mol d i n whic h fiberglas s reinforcemen t ha s bee n placed . Shee t moldin g compound (SMC ) mean s a ready-to-mol d putty-lik e moldin g compound processe d int o shee t form . Th e moldin g compound i s sandwiche d betwee n a to p and a botto m film , an

d i t contain s resins , catalysts , fillers , chemica l thickeners , mol d releas e agents , reinforcements , an d othe r ingredients . Shee t moldin g compound ca n b e use d i n 

## *2 - . - 'P,4 _ { 05/03/0 2 15:2 9 ®1919941023 4 PE S RT P N C 0002/00 4

New Definition
Pre-forminjectio n mean s a for mo f pultrusio n wher e liqui d resi n i s injecte d t o saturat e reinforcement s i n a n enclose d systemcontainin g on e o r mor e chamber s wit h opening s onl ylarg e enoug h t o admi t th e reinforcements . Resin , whic h drip s ou t o f th e chamber(s ) durin g th e process , i s collecte d i n close d pipin g o r covere d trough s an d the n int o a covere d reservoi r fo r recycle . Resi n storag e vessels , reservoirs , transfe r systems , and collectio n system s ar e covere d o r shielde d fro mth e ambien t air . Pre-forminjectio n differ s fro mdirec t di e injectio n i n tha t th e injectio n chamber s ar e no t directl yattache d t o th e die .
Note : I n definitio n o f Pultrusion . als o chang e "resi n injection " t o "pre-for

minjection. " 

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