Main Parameters

• When the dimension type ( DT ) is 'score-to-score', the result values of L and Lss are equal.

• When DT is 'inside', the length the interior compartment of the folded box will equal the value of L, and the actual base length in the drawing ( Lss ) will be equal to L+5d to allow for, the folding of the two side flaps ( each "eating away" a d/2 area, thus a whole d ) as well as to take into account that  slotted flaps along with the 'taper' flaps eat away additional 4d portion.

• When DT is 'outside', the overall "outer" length of the folded box will equal the value of L.

L is only used in the expression of this actual score-to-score length parameter Lss. This means that changing the expression of L will change the base length in the drawing, too.

• When the dimension type ( DT ) is 'score-to-score', the result values of L and Lss are equal.

• When DT is 'inside', the length the interior compartment of the folded box will equal the value of L, and the actual base length in the drawing ( Lss ) will be equal to L+5d to allow for, the folding of the two side flaps ( each "eating away" a d/2 area, thus a whole d ) as well as to take into account that  slotted flaps along with the 'taper' flaps eat away additional 4d portion.

• When DT is 'outside', the overall "outer" length of the folded box will equal the value of L.

L is only used in the expression of this actual score-to-score length parameter Lss. This means that changing the expression of L will change the base length in the drawing, too.

• When the dimension type ( DT ) is 'score-to-score', the result values of W and Wss are the same.

• When DT is 'inside', the width the interior compartment of the folded box will equal the value of W, and the actual base width in the drawing ( Wss ) will be equal to W+2d to allow for the folding of the two side panels ( each "eating away" a d/2 area, thus a whole d ) plus a whole d for the tuck end.

• When DT is 'outside', the overall "outer" width of the folded box will equal the value of W, and the actual base width in the drawing Wss will be equal to W-d to allow for the folding of the two side panels, each of which "adds" a d/2 area to the outer W width.

To change the expression of W, click in the Expression column field of W in the Parameters tabular pane tab and enter a new expression value.

Drawing A uses 2 different height parameters - HssX1 and HssX2 - for the definition of the two longer side flaps ( parallel to Ox ), because the outer flap is designed to be "higher" than the interior flap, in order to compensate the gap left when the tuck panel ( the "cover" of the box ) closes.

In drawing B the two longer side flaps ( parallel to Ox ) are of equal height, so a uniform HssX parameter is used for both of them.

The other 2 side flaps ( parallel to Oy ), in both drawings, are defined via the HssY parameter, taking into account the double-crease.

Also, the Flaps group parameters UTD and FH depend indirectly on H ( through HssY ): UTD uses HssY in its expression, and FH on its turn uses UTD in its Min bound expression.

Therefore, you can choose among 3 dimension types to calculate the design, depending on which box size you are interested in: the inside of the box ( e.g. when your primary concern is the article that the box is designed for to fit in it ), the outside of the box ( e.g. when you are interested in the outer limits of the box so that you can fit a number of such boxes into a bigger containter ), or the score to score size ( e.g. the in-between dimension type where the system calculates the design without taking into account the value of d; for instance, the real box length parameter Lss has the expression L+2*CDC1Y - i.e. the length parameter L value plus twice the value of the correction parameter CDC1Y which is equal to 0.00 when DT=dtSS, a positive number when DT=dtOD, and a bigger positive number when DT=dtID ).

DT is a selection parameter - it uses the selection entries of the DimTypes selection type, predefined in the FEFCO parameter template. The 3 predefined entries are as follows:

• dtID - inside dimension type. Use this dimension type when you seek to define the dimensions of the interior "compartment" of the folded box. The system automatically resizes the whole design according to the specific corrections for inside dimension type, taking into account the additional distances caused by the folding sides of the box. As a result, inside dimension type makes the box design larger than with the other two options ( e.g. although the real length of the interior folded box compartment will be equal to the value of L, Lss has a bigger value than L because the system has to provide for the area that is "eaten away" on folding due to the thickness of the material ).

• dtSS - score-to-score dimension type. Use this dimension type when you are not concerned with the thickness of the material ( flute ) and you do not want the system to take it into account when calculating the design ( in this case L=Lss ).

• dtOD - outside dimension type. Use this dimension type when you want the dimensions you enter to define the outer shape of the folded box. The system automatically resizes ( "shrinks" ) the design so that the real outer dimensions are as specified by you ( e.g. the outer length of the folded box is equal to the value of L, and Lss equals to L+d to allow for the "lost" area of the two side flaps, which, when folded at 90o, "eat away" d/2 each ).

To change the expression of DT, click in the Expression column field of DT in the Parameters tabular pane tab and select the desired option from the list.