A box template production system (100; 200; 300) comprising: a converting part (112; 212; 312) which is configured for converting a fanfolded sheet material (104a-b; 204a-e) into box templates, the fanfolded sheet material (104a-b; 204a-e) being provided to the converting part from at least one fanfold bale (102a, 102b; 202a-202e) positioned at an inlet side (100a; 200a) of the system; and at least one feed guide (108a, 108b; 208a-208e) configured for receiving the sheet material (104a-b; 204a-e) from the at least one fanfold bale (102a, 102b; 202a-202e) and guiding it up to a top position (121a, 121b; 221a-221e) and then down from the top position to the converting part (112, 212, 312), wherein the at least one feed guide (108a, 108b; 208a-208e) is provided as an arc starting at a start position (108a', 108b'; 208a'-208e') where the sheet material (104a-b; 204a-e) is provided to the feed guide, said arc further comprising the top position (121a, 121b; 221a-221e), wherein said feed guide has a width being less than one fifth of the width of the sheet material, wherein only one feed guide (108a, 108b; 208a-208e) is provided for each fanfold bale (102a, 102b; 202a-202e), wherein the at least one feed guide (108a, 108b; 208a-208e) is configured for allowing the sheet material (104a-b; 204a-e) to tilt sideways around the feed guide on its way up to the top position (121a, 121b; 221a-221e), thereby enabling correction of the feeding direction of the sheet material, wherein the converting part (112; 212; 312) of the system is configured for receiving the sheet material (104a-b; 204a-e) from the at least one feed guide (108a, 108b; 208a-208e) or from one or more connecting guide parts on its way down from the top position (121a, 121b; 221a-221e). a converting part (112; 212; 312) which is configured for converting a fanfolded sheet material (104a-b; 204a-e) into box templates, the fanfolded sheet material (104a-b; 204a-e) being provided to the converting part from at least one fanfold bale (102a, 102b; 202a-202e) positioned at an inlet side (100a; 200a) of the system; and at least one feed guide (108a, 108b; 208a-208e) configured for receiving the sheet material (104a-b; 204a-e) from the at least one fanfold bale (102a, 102b; 202a-202e) and guiding it up to a top position (121a, 121b; 221a-221e) and then down from the top position to the converting part (112, 212, 312), wherein the at least one feed guide (108a, 108b; 208a-208e) is provided as an arc starting at a start position (108a', 108b'; 208a'-208e') where the sheet material (104a-b; 204a-e) is provided to the feed guide, said arc further comprising the top position (121a, 121b; 221a-221e), wherein said feed guide has a width being less than one fifth of the width of the sheet material, wherein only one feed guide (108a, 108b; 208a-208e) is provided for each fanfold bale (102a, 102b; 202a-202e), wherein the at least one feed guide (108a, 108b; 208a-208e) is configured for allowing the sheet material (104a-b; 204a-e) to tilt sideways around the feed guide on its way up to the top position (121a, 121b; 221a-221e), thereby enabling correction of the feeding direction of the sheet material, wherein the converting part (112; 212; 312) of the system is configured for receiving the sheet material (104a-b; 204a-e) from the at least one feed guide (108a, 108b; 208a-208e) or from one or more connecting guide parts on its way down from the top position (121a, 121b; 221a-221e).